Thanks to all for the interesting and diverse responses.
OK, the reason I am upgrading is not because B

T told me..it is because they are ceasing support for my browser....sent to me in an email starting "Dear Customer"....unlike the ones trying to flog me the Sky / BT package and other promotions beginning with "Dear Mr K n C"...subtle difference...the email basically was written in such a manner that implied the recipient was an idiot ( some justification on my part at times, possibly ..cough ! ) but did kindly offer to help me by links to a browser optimised for BT / Yahell ! / IE8....quelle surprise !....so I tried to download Firefox, IE8 etc and no joy...hence my rationale was make the leap to Win7 and then stay with it for as long as possible....my little PC is nearly 10 years old anyway given that I work on the "if it ain't broke" etc principle.....so the mail from BT sort of pushed me if you like.
Spoke to a BT techie today and got a sensible reply...I asked " customer services " about getting a Home Hub router....no problem they say....we can either flog you one for £80 or you can upgrade your broadband package by another £5 pm and get one free.....

.....so I tried another tactic..called the techie side of BT ...seems my Voyager 220 ADSL voice router will be fine with the ethernet connection....so no need for a new router...just plug in and go.....any opinions or experiences which contradict this, please advise.
Transferring the data may be a bit more tricky ( for me ) but the IT guys at work have offered an "idiots guide" so this can be attempted once the new PC is up and running.....as for Favourites / Bookmarks, well a bit of selectivity is required....once Google is running, I can simply select those I want to keep from the old machine and enter accordingly.....emails may be a problem however, but again, the IT guys say if I copy out the settings etc on my old machine on to paper...a bit laborious, but if it works, fine..then simply enter into the new machine, all should be well.
Here endeth the 9'clock News.....