Which version of Win7?
Did you try running PI in compatibility mode?
See the following article:
Using Windows 7 or Vista Compatibility Mode
http://tinyurl.com/3yy254
or.....
http://www.howtogeek.com/howto/windows-vista/using-windows-vista-compatibility-mode/
--
Volunteer J - MS-MVP
Digital Media Experience
Notice
This is not tech support
I am a volunteer
Solutions that work for
me may not work for you
Proceed at your own risk
Windows 7 -
Check the compatibility status of your software and devices
http://tinyurl.com/2exmov3
or.....
http://www.microsoft.com/windows/compatibility/en-us/default.aspx
Windows 7 - Compatibility Mode
http://tinyurl.com/yhdzwu9
or.....
http://www.sevenforums.com/tutorials/316-compatibility-mode.html
--
Volunteer J - MS-MVP
Digital Media Experience
Notice
This is not tech support
I am a volunteer
Solutions that work for
me may not work for you
Proceed at your own risk
=====