2001 325I speedometer error code reset

I have just replaced my BMW gauge package with one off the Net, due to mine going bad. When used one was installed I receive error codes for the DSC. Can't tell if it's on or off either. Also, the gear icon is lit saying I have an automatic transmission issue. The car is a 5 speed, so I believe these codes were from the previous car. Was looking for info on how to reset them.