How to use proxy in Seamonkey
Do you want to know how to use proxy for email, news, IRC and web browser in a few clicks? SeaMonkey allows to do it. This is a small and easy browser suite with many features.
Run Seamonkey
Go to Edit → Preferences

Click Advanced category and choose Proxies, choose Manual proxy configuration and then click Advanced button

Click on checkbox Use HTTP Proxy settings for all protocols
Now place IP address to HTTP Proxy, port to Port

Click OK
Enjoy using proxy in Seamonkey