Here's my setup (and I will upload pics after our session tonight)
Dell PC (XP Home, 2.4gHz Pentium)
Sonar 6 PE
Delta 1010LT AD/DA converter
Audio Centron Stereo Power Amp
Alesis Monitor One MK II passive near-field monitors
Carvin M400 Headphone Amp
Behringer UUB1002 mini-mixer
Phonic MM1002 mini-mixer
Studio Master 621 Mixing Console
We have an array of "typical" dynamic band mics - SM57's and SM58's
Also an Oktava MK012 Condenser mic (Hypercardioid)
A pair of dynamic stealth mics and a nice little preamp by Church Audio
Guitar and Bass patch in Via POD's (no amps in the room)
Keys go direct
Kit is miked (not close-miked - we can use the entire room just to get the kit since everyone else goes direct)
It took me a while to figure out the signal chain and how to get everyone patched in, monitored, sent to Sonar, etc. - but I finally have that all resolved and we can all play together using the headphone mix (no bleed).
If you are at all interested, here is a Google Spreadsheet that details the signal chain we are currently using.