PAC file?

hey, I'm a newb when it comes to proxies so don't get mad at me!

I am trying to make it so my web browser always uses proxies. I see there are several types of proxies (http, FTP, HTTPS, RTSP, SOCKS, and Gopher) and I also see a PAC file which I guess choses a proxy in a given situation.

Basically, can you write a PAC file that will make your IP change every few minutes? And what's the best type of proxy to use for using crappy sites like Digital Point?

usually http for browsing and

ftp for transfering bro..

https for security reason
other than that i dunno >.<

The pac file is for automatic distribution and as example to manage a number of proxies based on geographic locations.

In general I'd go for a socks proxy as they are universal proxies that work for all internet applications and not just the http