There is a particular fix for a lot of these issues that I can't believe that noone has mentioned yet, being the excellent "input remapper" for macbooks.
I thought almost all boot camp users was on this one, I could certainly not manage wihtout it.
This allows complete flexibility, myself I have:
ctrl - fn - win - alt
but all options are possible.
Seems fusion doesn't send the fn key, this is not optimal but have obvious purpose, it can easily be sacrificed.
fn -ctr - win - alt
is what I have set it to now, and that works a charm.
A big bonus is that the standard setup includes alt gr mapping of the right apple button, also works.
What is not working is having the enter key remapped to right click, a fantastic concept that I would love to have in osx as well since it is available while using the touchpad. Some fix for this with input remapper would be very nice, a year into using mostly solely the mbp for windows that is about as mapped into my hands as ctrl on the rightmost was when I started using boot camp ...
A possible solution for almost all of the xp/mac keyboard issue is if there could be option of manually swapping fn and ctrl ala the fix mentioned at the top of the thread. It is not a problem not to have an fn key, but it occupies the space of the windows ctrl key. There are very few other issues left that can't then be handled rather easily with input remapper.
As an example, it is only a few minutes to map all of ctrl - v, ctrl - a and so on to command (in my setup, now alt) - v and so on. Alt - v or any other alt shortcuts have not conflicted yet in any app I use -- obviously the problem would be to access native program shortcuts, not unpredictable results. It is often possible to change program shortcuts, and there are also functionality in input remapper I believe to address such issues. It shouldn't be a problem to make a ready settings file for vmware for input remapper featuring this.
Input remapper being free software, it is well possible that you could be able to rent the code and integrate something slightly more user friendly into you control center -- it is important though that it be left as an option to run the original program, as that also takes care of fan speed in boot camp XP. This solution could with quite limited work allow having a button in the tools section with "use apple copy and selection shortcuts", as an example -- I am doing it now and it is solid.
URLs doesn't seem to be working from Opera or just now, but input remapper can be found at;
http://www.olofsson.info/