IE7 and small windows.

[.Mark]

Been running IE7 for ages now, since first beta without any issues, quite like it. But this week when I click on a link it opens a new window - which I am happy with, but the window is only about 1/4 screen size. What I really want is it to open full screen. I have resized the new window to full screen and then closed it but the next one come up small again - any ideas?