Ok this is an easy one, or should atleast be easy

I have just read the instructions that come with the chatmodule and this is what i think you should do:
1. Upload all the files just like they are delivered
2. Login as a User
3. Login as Superadmin
4. Go into the adminpanel
5. Look for the SPChat Icon in the adminpanel
6. Click the Icon
7. See that there are error messages
8. Ignore the error messages
9. Click the install link there
10. Go into SPChat adminpanel once again and do all you ahve to do
This is as detailed as possible, can't write any better instructions