All of the following commands are easy to do with scripts.dll changes:
move
summon
score
cash
kill
spawn
teleport
health
shield
ID
The following are not easy for various reasons:
team <team> - Change the team of the player.
n00b - Turns the player into a random, funny looking, model.
pamsg <message> - Sends an AMSG to a single player.
Additionally I don't know how SK is intercepting the messages typed into the console however you don't need to do that anyway you can just feed them in from an external program via a socket.