Nothing wrong with working in Windows man, it gets the job done. Depending on how many tracks you're recording a basic two channel interfaces is surprisingly cheap, obviously if you're tracking a drum kit you're gonna need a few more ins, but for just recording one or two tracks at a time there's heaps of options out there at very reasonable prices.
This is what I'm running, I love it!!
http://www.ebay.com.au/itm/M-Audio-M...item339c2774ab