If you want to have great results as Spudman says you would have to pass through an interface and you can use for example T Bone SCT 2000 microphone which is a very nice and affordable microphone
http://www.thomann.de/gb/the_tbone_sct2000popkiller.htm
If your budget is very limited you can directly buy a USB microphone
http://www.samsontech.com/products/p...fm?prodID=1810
I think teh sennheiser is also good (sorry i only found it in french)
http://www.conrad.fr/micro_usb_postc...0_18834_535731
Jipes
Guitars:
1978 Fender Telecaster Thinline Custom USA, New Nash TL-72 Thinline Telecaster, 1965 Harmony Meteor, H71, 1986 Fender Telecaster Esquire MIJ, New Martin J-41 Special, 1933 National Duolian, 1941, New Eastwood Mandocaster 12 strings
Amps:
Tweed Vibrolux Custom Denis Manlay, 1976 Fender Deluxe Reverb Silverface