Well... You can check these instructions for putting your laptop into "active cooling" mode. I guess it just gives your system cooling priority, without lowering performance to cool. Has it's upsides and downsides, I suppose...
Another thing I notice, is that with my laptop that I just did a small repair on (replaced broken fan), you may want to take the heatsink and fan off, and maybe apply some better thermal compound onto the cpu. If you haven't build a computer, or just fear anything going wrong, don't do it!
You could go the cooling pad solution. A good one, though. Don't get a crappy sub-$10 pad like I did way back. Didn't do anything!! Although, if you're working on a table, it's still useful to have the laptop raised and have...