I recently wrote a song on my bass guitar, and I was wanting to get it on my myspace page some how. Right now, the things I have, are a laptop, a bass amp, and a bass guitar of course. What other items will I need to buy if there are any? And what is the cheapest way to do it. By the way, its not a whole song, just the bass cover. I would be very appreiciated if someone could help. Thanks 
The easiest way would be with one of these or any of the line 6 pod studios or tone ports. I own a toneport which, is the old version of these.
http://line6.com/podstudiogx/