totally random: did you know baker's chocolate is a great substance for polishing metal? i saw it on myth busters. cocoa powder is a fine abrasive, so you can use it as a polishing agent as long as you clean the surface afterwards with some isopropyl alcohol (to get rid of the oils). i tried it once on the bottom of an aluminum can and it really made if very mirror-like. a LOT of work though; probably better to start with a fine-grade steel wool and then switch to the chocolate.
I've got my quad in an old modded AT tower case...
wow that's a big case! even if it ran horribly, my old case did spoil me by being pretty small. it measures 12.5" tall, 3.7" wide and 14.5" deep. by comparison this antec 900 seems monsterous, but looking at that thing all i can say is 'nevermind'

i didn't realize you could dye plastic - do you have to start from a light color like white, clear or beige?
also i noticed you mentioned having a problem with animal hair; i do too. i've got a longhaired cat, and my roommate has a medium-sized sheperd mutt. what did you use for filter material? did it noticably reduce airflow?
i was thinking about general air filters the other day, as an alternative (or at least, something to reduce dust buildup). i think HEPA filters smell funny, and after doing some research, i found that
electrostatic precipitators (such as the ionic breeze from Sharper Image) produce ozone and nitrous oxide as side effects. so i'm back to considering filter mesh.
You better be quiet about all this case modding, you're going to get me roped into it, hehe.
hehehe. i was talking about it with one of my coworkers last week. he said something like, "why would you do that if you can't show it off?" (alluding to PimpMyRide and all that street racing business). my reply was, "it's not really for anyone else; i want to enjoy it. and do desktops ever look
nice? i don't think so. at least i can make mine look like a half-baked postmodern art project." besides, a lot of the basic stuff really isn't very expensive. it's really a question of how much work you want to put in (and at a certainly point, how competent you are).
I don't know what to tell you about resurrecting your old system, but I have couple old

-III 450 systems I can't seem to get rid of, you want 'em for your media system?

think they'd handle 1080i DVR? (the TV cards i've looked at recommend a 3.0G pentium 4 at least). they've gotta be useful for something... i just have no idea what off the top of my head.
i did some more "window shopping" on newegg yesterday for this HTPC idea -- mostly to get a sense of how much i'd realistically spend on a project like this, and the
XPS revival wishlist totals to just over $350 w/o tax or S&H. that's not bad! this assumes i'm keeping my old PD 2.6G, 2x512MB 533 RAM, radeon X600 and WinMCE. the most expensive item on that list is a half TB drive, but if i'm gonna do DVR i'd better have the space for it. you might also notice lack of an optical drive; i would use the DVD-RW on my current desktop after doing the slimline mod mentioned above (or upgrade to a blu-ray/DVD-RW when they drop in price).
also, what's the point of having this if i don't have a nice, big TV for it, right? 1080i LCD TVs are starting at $800 for a couple 37" models.
as a bit of a tangent, 1080i is a 16:9 (1920x1080) version of WUXGA (1920x1200), which is what my current monitor runs at. i paid about $600 for this thing two years ago, but that was at the discounted price for buying it with a new PC. one (and probably the only one) good thing i'll say about Dell, they make very nice monitors. this thing has 4 USB port extensions and 2 media multi-card readers; it has 5 connection types and built-in picture-in-picture; it's color has been flawless since the day i got it; the stand is sturdy and has built-in portrait orientation support and cable clips, and it's pretty easy to detach the display from the stand for moving them separately.
anyway, the real point is that i wouldn't bother to buy the HTPC components until i can afford an HDTV. maybe this all seems a little frivilous, but honestly, it keeps me from burning all my money up at bars

and the whole point of what i'm doing with my life right now is to get some nice things. i graduated with high honors from a good university, and i'm bound for grad school sooner or later; but the truly sucky thing about being a student was being poor all the time. and i'm still a little weary of being a student anyway (what's nice about working is that my job ends when i go home--school is a constantly, back-of-the-mind nagging).
so i'm enjoying my mid 20s, and at least some intelligent investment in electronics is just that- an investment (better than drinking). and i make respectable enough money that i'll have this computer purchase paid off by March 1st. i've been living more modestly in other regards anyway (not going out often, brown bagging my lunch, etc.).
of course, the big downside to getting stuff is that it'll be more difficult to move when i do go to grad school (i'm not really interested in any of my options in southern CA).