Hey man
Your signal chain will be something like this
Rack > mic > preamp/mixingdesk/firewire or usb interface > PC > Recording software with VST drums plugin
MICS: try a SM57 to mic against your cab and a Condenser mic (try an audio technika at4040) for recording the cab a little bit back - by mixing these 2 sounds you can get some real hip tones.
Interfaces : Get a good dedicated preamp , or an all in one interface like the m audio projectmix.
PC: You probably typed your post on this :P
Recording software : Checkout Sonar 8 Producer edition , its my favourite of all the recording softwares , and pretty easy to get to grips with. You can pay $700 for this or goto a torrent site and download a perfectly fine ISO copy.... Guess which one i did
Drums: while youre on that torrent site, download ez drummer drumkit from hell
And now , LET THERE BE ROCK !