Aspen20
It may or may not work with CrossOver (probably not).
However, I'll take a bet and say that it will definitely work with Parallels5
You can download a fully working trial copy and run it for a month. I believe they have a special going at the moment for about $69.
For what it does, it represents awesome value. Lets you run any of the Windows OS's and in many cases gives you more control over the Win programs than a native Windows installation.
I try to use the Mac OS for as much as is possible, but when I have to soil my hands with Win32 software (as is inevitable) then Parallels5 makes it do-able.
There's no doubt that there must be some programs that won't run under it (Geosoft Montaj V7 is supposed not to, but I have found a way to do it and it's not difficult) but there's often a solution even then.