I am not able to install zonealarm security suite 8.0.59. Says : could not load the DLL library. Anything I can do about it?

At this time Zone Alarm is not fully compatible with Windows 7. Check out the Windows Team Blog and the Microsoft Security Partners page for details on which solutions are available. ~Alex T.~Windows Desktop Experience MVP~

I cannot agree 100% to this answer because i have installed the earlier version of zonealarm security suite 7.0.470, which is running in my windows 7.

While there are other anti-virus solutions out there that do work they are not certified by Microsoft to be fully compatible with Windows 7 and are considered use at your own risk. Only those listed on the sites i listed are endorsed by Microsoft. Which is why i selected it as the answer. ~Alex T.~Windows Desktop Experience MVP~

this can be tricky. Initially Zonalarm(free) would not install. but...run in Vista compatability and it did. and...it appeared to be running OK, no problems. However i updated my realtec landriver at the same time and on reboot could not get through to the net (or my router), although the system thought all was ok. As it turned out it was Zonalrm that was the problem. The driver thing was unfortunate timing, but clearly Zonealrm in many forms has compat problems.