M1210 Wireless Broadband (WWAN) card

When I bought my M1210 a while ago, I didn't go for the WWAN option as, at
the time, I didn't have a 3G sim card.

I've recently upgraded my business phone to an Orange M700 (I'm UK based),
and as this comes with 3G, I'm looking at the possibility of added a WWAN
mini-PCI card to the M1210.

I haven't really looked around the Dell site much yet, but I remember when I
purchased the laptop, they only sold WWAN cards with a Vodafone contract. I
don't want a contract, I just want the card. I'm also assuming that Dell is
quite an expensive place to buy the card.

Can anyone let me know anywhere in the UK where I can buy one... Assuming
it's not too expensive. At the end of the day I can use the M700 as a
bluetooth modem if I want, so I don't want to purchase a WWAN if it's going
to cost too much.

Cheers,
A.