In VMware Fusion I deleted windows\system 32\wvUlmnLd.dll file by accident. (I was asked by by antivirus security)
I reinstalled VMware fusion 3 again but I receive the same message that this file is missing.

Is this file important?
Do I have to start from the beginning and reinstall the OS again?

I have installed a few OS's on VMware Fusion for testing preposes  and am running into the problem of the open systems asking to free up more memory or it will have to shut down. It asks to free up x MB's when I have over 1 1/2 GB available on my Mac's HD capacity

Is there a way to increase the memory?
How can one find out how much each different OS is using and has left?

Where can I find a detailed written Help with a table of contents etc. for VMware Fusion that does not require an internet connection?