The documentation for Game Commander Pro was quite extensive.
But I've never used it, so cannot comment on how well it works.

I believe it has a free trial, like most of the non-free boxing software tools.
I know IS Boxer has a free trial too.
And HKN is a completely free program, if you're willing to go with the default script and modify it based on tutorials on the site or community support.

Sample a few programs and see what works for you.

I know Keyclone and IS Boxer give good support.
For KC, you need to go onto his site and phone him (PH # is listed on his site).
IS Boxer has good forum support here and its own site, plus IRC support on its site too.

Some programs to check out:

IS Boxer = www.isboxer.com
HKN = www.hotkeynet.com
GCP = www.gamecommanderpro.com
Keyclone = www.solidice.com/keyclone
AHK = www.autohotkey.com
Pwnboxer = www.pwnboxer.com
Not sure on the URL for Octopus.

Any boxing software with a trial is a good candidate to try yourself.
There's a reason IS Boxer is so popular amongst boxers...