MacBook Pro late 2007 overheating with lion

Greetings:
I seem to be having overheating problems on my late 2007 MacBook Pro running Lion. Is there a possibility that I may have to clean the insides of my MBP? I have smcFan control running at 4,000 RPM and that seems to keep it somewhat cool.
Thanks,

Tom,
Your logic is unassailable. After a few years, even a small amount of dust can really cause a machine to overheat. I'm a religious user of SMC Fan Control, though my fan is around 2000rpm.
Cleaning the inside of your MBP is very easy. Open the case, and use a blower to disperse the dust. The whole procedure should take under five minutes. If you're uncomfortable doing it, visit your local friendly Apple Store; they'll be happy to blow out the dust for free.
It's also a good idea to post here in case the advice is really good, or not, or if you still have questions.

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