How do I transfer keybindings and other options?

[Sooty]

Say to another computer, or if I need to do a fresh 'install' on the same computer?

[greycat]

You could copy the configuration files from the first computer to the second, if you want.

Under Linux, these are in ~/.t-engine/4.0/

Under Windows, http://te4.org/wiki/frequently-asked-questions-tome4 says they should be in C:\Documents and Settings\yourusername\T-Engine\4.0\