Greg is right, as long as you can get yourself a have decent spec PC and a good soundcard, you should be ok!
The advantage of a multi-track over a PC is if you say decide you want to record a gig or just a rehearsel away from your home, it can be perfect.
However its accepted fairly universaly that a PC is more versatile
One thing to remember is when spec'in up your PC, do not skimp out on a decent sized Hard Drive. If you do as i do, and save all the different versions of a recording and use quite a few tracks doing it, your soon going to be eating into your drive
~~ TS ~~