Thanks for the response. I followed what you said, but there appears to be an error as follows:

file -f -o "C:/Program Files/Alias/Maya6.0/scripts/startup/X_Ray.mel";
// Error: } //
// Error: "C:\Program Files\Alias\Maya6.0\scripts\startup\X_Ray.mel" line 42.1: Syntax error //
// Error: Error reading file. //
// Error: //

Maybe the file is corrupt, has anyone else had any probs recently with the xray toggle from this site before?

Any ideas?