Reinstall it. It's broke. Don't feel bad - just about everyone does that to their first MCE2k5 install. :)
MCE2k5 installs a little (nay, make that a lot), ah, wierd.
You boot from CD1 (as you did), and start the install. When it asks you for the other disc, insert CD2.
Here's where it gets really wierd:
When it asks you to "please insert the Windows XP Professional Service Pack 2 CD",
reinsert CD1.
Ignore that third disc - you'll take care of installing RU2 via Windows Update.
Oh, and a really good install guide (I'd highly recommend it, as it's the best way to get a good, stable install done) can be found
here.
Oh, future note, for when you do get that tuner:
MCE2k5 has (and, forever will have) a requirement that you have an analog tuner installed, in order to run TV setup - you can't install
just a digital tuner. I know, if you're an OTA-only user, it (the analog tuner) won't work come February; but, you need to install one anyways. The need for it is hard-coded into the OS.
~Chris
'nearly every day of my life is some kind of computer hell'
Desktop: E7300 on GA-P31, 2GB, HVR-1250, Aver M780, HD4650, Win7; server: Intel E6400 on I965P, 2GB, 2x 500GB WD, PVR500, NV DualTV, Saber2020, 3xHDHR; Xbox MCX, Xbox360; MCE2k5