Thread:Project:Support desk/Autoincrement extension

Hi, I'm using the Autoincrement extension, and it works great, but I'd like to alter the file so that instead of outputting 1, 2, 3, etc., it'll output group1, group2, group3, etc. However, I don't seem to have enough knowledge of php to do this, even though it should be pretty simple. Can anyone provide me with some code?