I don't care what gender or race you are, you can try to act like a geek, but won't ever be one if you aren't already (in which case it's not acting) - that only puts you up against people who really are geeks/nerds/tech heads/etc and shows just how much fail you really are...
Says one of us high UID slashdotters who must've started interacting in the geek scene relatively recently. People aren't born geeks; they are born curious and learn to be a geek because it's interesting. I can see this book being very useful for a starting geek; someone who has that curiosity and has realized that technology is a fun thing to learn about. How about we accept new geeks into the community rather than showing them the venom that festers here?
I completely agree - I have a pair of mutually-incompatible versions of the same application...
Another application that you may want to look at, also from VMware, is ThinApp (previously Thinstall). Rather than providing virtualized hardware to a guest operating system which then runs "native" applications, this approach provides a virtualized operating system to the applications.
Basically, rather than actually installing your apps onto the system that you're running, you're installing them into a differential file that references your host system. You could install each version of the app, each in a different thin wrapper, and thus the changes that each makes would be suppressed from the other (as each would only be making changes in their own differential file).
Sadly, it is far from a free technology...
For large values of one, one equals two, for small values of two.