PS3 help, streaming media from external usb drive on pc

[the_4ork]

so after having my ps3 for like a year and a half now... i just realised i can stream media on it...

i oringally bought it for the blueray player, but i occasionally play a game or two on it, i use my pc mostly for that anyways... im a mouse and keyboard kind of guy (first person shooters) rather than a stupid thumb controller

anywho....

ive realised i can load videos (i have the whole 5 seasons of lost on my computer) and watch them on my TV in the living room wirelessly!!!
awesome!!

only thing is, the videos are on a seperate hard drive than what windows is installed on...

windows is on a 37GB raptor drive, and everything else is on a 1TB usb external....

So... how do i set it up so the ps3 can see whats on my external?
i have a broken leg right now and its very tiring going back and forth from my room to the living room to do trial and error to get it to work

can anyone help me?

only way i can get it to work right now is if i load the video i want to watch into C:\Users\Public\Videos

then go on the ps3 and look at all videos it finds them...