Are there anyways to lessen the footprint of a Windows 7 install when installing to a virtual machine? So far it seems to take around 30GB, anyway to reduce this?
There are several applications out there for making "lite" versions of Windows, where you can customise the components and services that get installed.
This is often referred to as slipstreaming.
Here is an example - thisis just the first in a google search for "Windows 7 Lite" so you may want to research alternatives.
Here is how I reduce the sizes (needed it for SSD installs - both guest and host OS).