Hi just thought I would let you know the outcome of my problems as it may help someone else.
Having installed SP1 I had great difficulty connecting to the internet with my Nokia E61 which had always been superb. I could not resolve the problem so reformatted thinking this would resolve the issue. No such luck

Tried everything altering settings etc. Began to wonder if T-mobile had gagged me as I had done a lot of downloading (to set up my new pooter) without warning me. Anyway sat last night playing with the phone and got to wondering if it was the phone settings. Found the help page (it's a man thing

) and found a link to the Nokia download page and found I could download and reset the modem.

All is now back to normal even faster

.
Now the question is, did SP1 corrupt the phone settings? It was connected when I updated, or was it just a coincidence it happened at the same time?
Anyway all's well that ends well but it did drive me a bit ga ga (SWMBO says she didn't notice any difference!!!