Argos no: 549/0770
Was originally £39.99 then £24.99 but today has gone down to £21.99
From description: Enjoy three months unlimited internet allowance with this T-Mobile mobile broadband USB. Simply plug into your PC/laptop via a USB port and you could be online within a matter of minutes. This USB can be used as a memory stick too.
Hope that this helps somebody that's looking for temporary internet connection - like I was. Is ideal for normal light domestic use - but probably not so much for heavy use as I think by unlimited it means if you go over 2GB a month some services are restricted.
( Have searched & can't see this posted yet )