Have a look at this!
Believe it or not but it is a screenshot of Windows Update running via
CrossOver in SuSe 9.1 on my laptop.
I was able to download and install Internet Explorer 6.0 onto my linuxbox.
The funniest part was when Windows Update wanted to reboot the computer to
complete the installation. The CrossOver software automatically poped up
with the message: simulating Windows Boot.
A few seconds later and the software was running :-)