I have just received an email purporting to come from an unlikeley address, support@co.uk

'Our main mailing server will be temporary unavaible for the next two days, to continue receiving mail in these days you will have to configure our free autoforwarding service'

This looks extremely suspicious to me, with the spelling mistakes, and especially as it asks you to open the attached file, called attach.zip!

Either a virus, or a program which will divert your dial-up to a premium rate line?

I would advise against opening it!