Problems with Offline Browsing Utilities

I’ve downloaded a number of offline browsing utilities and none of them seem to work. It may be that I need to set up a proxy connection but I can’t figure out what it would be. I use comcast cable and have my computer networked via a router over a LAN. All the programs I’ve downloaded either time-out or give me some other error. I know that it can’t be the programs, so what’s wrong with my computer?


PS: If you need more details, please ask.