It depends on how you define "easy". Here are some methods:
1. Burn a CD-R with your data on it. Put it in the Vista machine and
copy over your data.
2. Copy your data on the ME box onto a USB thumbdrive. Put the drive in
the Vista machine and copy over your data.
3. Remove the hard drive from the ME box and either put it in a USB
drive enclosure or slave it to the Vista machine and copy over your data.