Software Deployment

I need some serious help registering an .ocx file that's contained inside of a .cab file. This .cab file updates a web based banking application and contains the following three files:
a9sil.exe
jwalkx.inf
jwalkx.ocx

Right now when the XP SP2 users click the icon that points to the URL they're notified that the JWalk.ocx Active-X component needs to be installed. The problem is that there's a corporate policy in place to prevent users from downloading any controls so I need to suppress this and have it to install silently and/or without anyuser intervention. I see where this is possible via group policy but only if it's an .msi file. I'm familiar with using the SMS installer to create executable but haven't been able to figure out how to register files. ould anyone know how to do this? I'd appreciate any quick responses.