Getting the Link the PS3 uses to download demo's Possible?

Im wanting to download demos threw my pc not the ps3 and i was wondering is there anyway i could find the linkl the ps3 uses to download it and download it on my pc?

Im currently on dial up because they refuse to exspand the highspeed to where i live. So i have my PS3 and xbox 360 ran threw my pc to access the xbox live and ps3 online stuff for game updates and such. i was wondering since its going threw my pc's shared connection maybe i could monitor what sites it is accessing? id love to get some help on this and id post links for everyone if someone could help thanks.