Hi the gear selector problem sounds like something t do with the clutch system either save cylinder,master cylinder,or pressure plate and clutch plate itself.
These also suffer from the dual mass flywheel wearing out very quickly,at low mileage.
The creaking sounds like a rubber susspension part,ie strut top mounting or bush on the subframe or something else,difficult to say without seeing the car.
Richard
rbtrans@hotmail.com
                
 richard
                
 March 2008