OK, here we go...

Make a backup of WOW.EXE
Load your favourite hex editor. e.g. http://www.hexworkshop.com

Code:
Disable AI rockets
------------------
offset	Hex			addr	ASM
20FBF	8B.EA.83.C5.05	orig	420FBF	mov ebp, edx
				420FC1	add ebp, 00000005
	33.ED.90.90.90	mod		xor ebp, ebp
					nop, nop, nop

No user rockets at start
------------------------
20FF3	08		orig	420FF3	mov ebp, 00000008
	00		mod		mov ebp, 00000000
Note: Ignore the assembly mnemonics if it confuses you, that's just for completeness. The AI rocket mod was a little tricky, the code would randomly allocate different rocket numbers to each AI aircraft.

Please don't steal credit for this \:\( , it'll effect my decision to release more.

Have fun \:\)

Andrew R.