A window with the permissions should come up, and this is where the permissions can be changed. Use the information above. Highlight the file for which you would like to change permissions, right click your mouse on the file, and then a menu should pop up. There are two ways users can check their Internet connection, Ping and Traceroute. Two commands which can be executed from a command prompt in your shell account.
Ping is generally a better means of checking connectivity on the Internet.
Ping times of under 100ms on the internet are very good. Times under 50ms are superb, times of 10ms or less usually means you are on the same network. Make a directory for your pgp files readable only by you. Note, we've experienced a problem when we finger an account to get someone's public key. The information appears correct, but when you cut and paste, the keys don't match.