I actually discovered I needed to install the source code from the install disc as well; the GCC compiler alone didn't do the job.
I've installed it.
Now comes a new problem; when I try to install an OS (Win2k or XP Pro) I keep getting errors saying vmware can't get the memory it needs (I have 1GB of RAM, what's the problem?!) I'll post that up as a separate and more detailed message tomorrow, unless you might know why this is happening?