triggering applications from a webpage

[Simon]

Hi, I figured out a way to execute applications, namely computer games such as the quake series and unreal tournament, by creating a file class in the registry that you that then create a url to, e.g. instead of file://myfile.txt, you could create a class and just put myfile://param1 param2 so this works well for triggering games from a page. Alas - I need to figure out how to change the directory before executing the app. Any ideas? [and vb's chdir isn't the answer - it's not a script thing, its a setting in the registry's class that you create - I just cant find it]. ta sim