Unable to Start Parallels5 and Win7

I installed Parallels Desktop5 and Win7 on two iMacs about 8 months ago. I have not used it in a long time. I have since installed Lion on both machines. When I start Desktop5 I am getting this error "Desktop 5 starting error "Parallels starting Windows 7 error-Unable to load the Parallels driver". If I click the "OK" it will go away and I then click on the "Windows7 Click to Start" and it returns to the initial starting error.

What do I do?

Andy

 

Only PDM 6 (latest revision) and 7 are compatible with Lion.

What do you do? Buy an upgrade.

 

OK, Thanks