For under 2 g's I would prolly go with these items.
(Audio Interface) M-Audio FireWire 410--299.99 (first make sure ur computer has a firewire port though.
(Microphone) I would go with the Studio Projects C1--239.99 or if you dont mind spending a little more on the Mic go with maybe a Blue Bluebird---499.99.
(Studio Monitors) I would probably suggest the yamaha hs50's or better yet the hs80's which run about 400 for the pair of hs50 and 600 for the pair of hs80's with a moutpiece to talk the dude down. Also the krk RP8 aren't to bad for the price at around 450-500 for the pair.
(Software) With the M audio interface that I gave u above you have the option to run protools m powered if you so chose, or any other software you want. protools m-powered--249.99
(Good Quailty Cables)--If you buy everything at the same time try and get them to throw the cables in for free, if not looking around a good 100-150 dollars.
Also if you got any extra cash after all that I would throw down on a mic preamp
(Mic preamp) Focusrite TrakMaster PRO---299.99 have heard good things about it.
hope this helps.