After several hours I managed to move the files to another computer.

I went into folder C:\My Documents\alcohol 120% found the MDS and MDF files for RCT2.

Burned both of them to CD, believe it or not, with Roxio.

Then I just copied them from the disc into the other computer.

The mistake I was making was to burn a copy of the image which you can't do with SecuROM. You only end up with a cd that doesn't work.

Just thought I would share this.

Of course It's probably posted somewhere else