From the age of the 3300c I would assume he is running 9x, in which case the process is simple if he has his installation cd.
1. start/run<type in sfc> and click OK
2. select "extract one file" option and type in stimon.exe
3. insert the cd (hold down shift key while cd loads to prevent auto run)
4. click start.
The file should automatically be extracted to c:\windows\system
Remove the cd, close sfc, reboot.