Remote Key Fob Volvo V70 post 2000

I recently purchased a remote key fob for my 2001 V70 through eBay.On going to my local Volvo dealer I was informed that this could not be programmed to my vehicle although it was the correct version of the fob. This is the 4function fob with a yellow button on bottom left.Alternative is new keys and fobs with software upgrade all costing about 350 . I contacted one of the eBay sellers of programmes for this asking if he/she could guarantee that their programme would work on my vehicle.I did not receive a reply. I would think that the same applies to other similar post 2000/2001 volvos. I do know however that it is possible to reprogramme pre 2001 V70's fairly easily.