No worries. I just recently got into modding BF2, stuff like adding Nuke warheads to Littlebird (too much fun on Wake Island) and giving pistols the force to knock tanks about 50 yards (or launch yourself way up in the air by shooting the ground).
Best advice I can toss you is, make sure you only edit one thing at a time, then test it. I had a few times where I would mod a few weapons/vehicles at a time and end up with a CTD. Then you have to go back and figure out what you did wrong.
Also, be careful adding weapons to soldier slots. If you have too many weapons in the same slot it will CTD every time.
Best advice I can toss you is, make sure you only edit one thing at a time, then test it. I had a few times where I would mod a few weapons/vehicles at a time and end up with a CTD. Then you have to go back and figure out what you did wrong.
Also, be careful adding weapons to soldier slots. If you have too many weapons in the same slot it will CTD every time.