Dan231,
Depending on the software version you are running you can relabel any of the Feature Codes to what you want them to be. I know this is a little late to know now, but it is always good information for those that did not know it could be done.
Go to System > Devices and Feature Codes > Feature Codes > Look for a 3rd Column with a Description of LABEL
Keep in mind that Labels can only be 16 Characters long, but it works well with the 53XX style phones, since most customers don't know what Reverse Transfer is I label it Pickup, Record-A-Call = Record Call, etc..
Thanks,
TE