Tools/Options/HTTP
HTTP Timeout
I doubt you'll have any need to change the default value of 30 seconds. Possibly if you have a very, very slow internet connection you might. If this is the case, you'll get a timeout error and can adjust the value until you can successfully download the required remailer pages.
Proxy
If you require an HTTP proxy, enter the info required in the Proxy Dialog. Please take care in entering this info. An error can cause the Stats Manager update function to stop working.