What clocks are you running on your 9600gt which are gaming stable?
Also, what drivers are you using/ and using ntune or another program?
I think with windows 7 you can oc your cpu as well. I have the 2.8 2008 unibody and can push it to 3.192 and even 3.265ghz which is pretty darn good. It even loads in @ 3.3 but I haven't done much testing at that point. That seems to be the limit with 1066mhz ddr3 memory but I have read that through bootcamp the apple chipset can recognize 1333mhz memory (which'll be downclocked to default in osx) but should be able to give you some more oc room on the cpu. (the 2.8 can probably reach 3.4 but I don't see it necessary to do all that much on a laptop, considering you would have to replace memory.
Finally, have you done a thermal paste job on your laptop? I bought some IC diamond 7 and have seen some great results.
PS: If you want to take your OC even further, I suggest you look into undervolting your cpu as well, which can further lower your temps. (It IS possible to undervolt AND overclock the core2duo's, but I assume it wont be by too much considering that the cpu is running higher than the default frequency. Either way, it should give you some nice temps. It is also possible to do that on the gpu but Ive only read about bios flashing, which I don't want to mess with on a machine that is dual booting. (If anyone knows a program that can do that for the gpu, please inform me
Have you ran 3dmark06? Im interested to see your OC'd results, glad to see many ppl are knowledgable enough to milk the most performance possible out of such a stylish design. Nothing is impossible guys, don't listen to ppl saying your playing with fire. As long as you are in the desired temp range, nothing can happen. And apple will never find out ;P
Ive been running my 9600m gt @ 650/930/1550 which is significantly faster than the even better 9700, playing sc2 on all ultra except shadows and shaders on high (25-30 fps is smooth for an rts game, @ 1440x900 of course) I am still experimenting with the best drivers so if anyone has anything to add I'd appreciate learning something new. Hope to have been a bit of help.