Programming Keyless Entry Fob for 1998 GMC Jimmy

I broke my old Fob and order 2 off Ebay with matching numbers and have read several programming options and wondered which one would be correct for my vehicle. Any help would be appreciated. I am a girl (somewhat mechanically inclined) but would appreciate very speciffic instructions. Thanks for any help, in advance.

See if this helps.
http://www.automotiveforums.com/vbulletin/showthread.php?t=310666&highlight=keyless+entry
Go down to the entry I made. :naughty:

See if this helps.
http://www.automotiveforums.com/vbulletin/showthread.php?t=310666&highlight=keyless+entry
Go down to the entry I made. :naughty:
Thanks So much I will try it when I get the new fob!