Windows 7: Adobe Photoshop CS4

Hi Guys

I have installed the CS4 Master Collection on my PC running Windows 7 Ultimate 64bit.



But it is all messed up .. nothing is working as it should The rulers don't show, the type tool doesn't work ! I type stuff, but it doesn't appear

I change the font size to a larger font, but it reverts back automatically to 0 pts !!

It is a mad house inside Photoshop !

What can I do to fix this

Thanks

PS. On Vista it worked fine !

What did you find at Adobe tech support?

I have been running CS4 Master Suite on Windows 7 64bit with no problems at all, either in Photoshop or any other Adobe prog. Would suggest a re-install.