300mbs?

about to buy a PC from Build Your Box and wandering if 300MBs wireless card is worth getting r should i just got the normal 54MBs card?

Depends entirely on what you use your local network for. If you're JUST accessing the internet, and you're not due to get any FTTC or high speed connection from Virgin, then you're probably fine with the 54mbit one.

Bit more information would be useful though

Another question, does your router support wireless n? If not then the 300Mbs card won't make any difference unless you replace it or install a WAP that does support wireless n.