Remote control code for a Goldstar VCR?

Hi! I would like to use my xfinity remote to control my Fisher T.V. as well as my Goldstar VCR. I've already programmed the remote to my t.v. and cable box. I have the comcast box connected to the television and VCR. It would be really cool if I could program some sort of "input" command into the remote so I won't have to get up all the time every time I wanna watch cable. My focus is to be able to use the remote to go from cable to my VHS tapes... assistance would be greatly appreciated! Thanks a lot! P.s. I apologize if my description is a bit unclear...