I noticed in the Software agreement that you can install VDL on two computers, but not run them at the same time.  I have a windows desktop and a mac laptop, both of which exceed the reccomended system requirements.  My question is, if i buY VDL 2, will the installer disk run on both my windows and my Mac, or will i have to buy seperate programs for ech computer?

VDL:2 is a hybrid program, only one purchase is needed.  I don't know how new your Mac is but Tapspace is planning on releasing a universal binary update to VDL:2 in the future for those who have recently purchased an intel based Mac.