UK Users of Tiscali or Orange Broadband

UK RESPONSES ONLY, please.

I'm still dial-up but looking to go Broadband with either Tiscali or Orange.
Any info' on the following would be much appreciated:

(1) Are there any problems configuring to Vista's Window Mail? ie. Do the
POP and SMTP connections work OK?

(2) Are there any other 'compatability' problems with Vista that I should be
aware of?

Thanks in advance,
Cath.