Have just loaded windows 7 and myibay appears to work OK. However, there does seem to be a small problem, I have cut and pasted the serial number but the 30 day evaluation notice continues to appear. Do you have an answer? Thanks

It has nothing to do with Window 7.
Please check that you are logged with the eBay user id, which was assigned with this key (you can check your Order Confirmation e-mail for that information).

If you are still having problems, you can contact me using Contact form and supply your eBay user id and registration key so I can check.