240sx keyless entry programing problems

[thatS14guy]

i bought a keyless entry remote off of ebay, the fcc id is the same as the one needed for my 95 240sx se, well i went to program it with one of the remotes he sent me it had a lock and unlock button and a trunk button. i would follow the steps put the key in and out atleast 6 times and the flashers flash, mine would flash at the 4th time, so i kept going until it says pres the lock button and flashers should flash, i do but my flashers dont flash. i sent the guy an email and he sent me another remote this one had a panic button instead of the trunk one and the same thing happens. i really dont know whats up with it im sure it has a keyless entry system.

please help, i really appreciate it

aldin