Is there a to automatically use a proxy server when connecting to a network?

Use FoxyProxy Firefox extension :)

@MedivhX—> thanks for the help but…FoxyProxy lets you assign certain proxy servers to be automatically used for different URL browsing patterns. Which is cool, but doesnt help to resolve my problem, i need to easily (automatically if possible) use a certain proxy server for one wireless network but not others. Any suggestions?

what OS? Location settings for the different network connections should do the trick.

Vista home premium, not sure how to access those settings, but that sounds promising

There’s really no real way to automatically go from no proxy to proxy. Automatic browser settings are pretty much useless, since a proxy server doesn’t advertise that it is as such.