Thanks for your input banzaiwolfe.
The idea is simple. Replace a manilla file with another. But no matter what program I use (Resco, Total Commander, cfu-gui etc) the !@#$% manila file will not change. The red slider cab is the only thing that seems abke to alter the manila. This is why I would like to put the .png file I have posted above into a cab so that I can amend my slider from red to blue.
AAAARRRRGGGGHHHH!!!!
Any help appreciated. Cheers