I would not reccomend themal epoxy for the NB sink. Normally the P4P 800 NB does not run that hot.
For VG thermal tape..
http://www.sidewindercomputers.com/akshintherin.html
What I would do first is to clean off all the pink bubble gum TIM that ASUS install this sink with, then reinstall it with good thermal grease. Whatever you have that's good. Zalman, CoolerMaster Premium, ThermalRight, AS Ceramique, AS5 is not necessary and the spring clips are low tension. I think the less viscous TIM would be better.
If you CPU's HS fan does not blow down you*may*want to activly cool the NB sink.
No pics but this is what I did, just for fun.
At
http://www.allelectronics.com > fans> fans with HS. There are new PIII HSFs, cost $2.50. I bought several just for the very high quality 40x10 BB fan, made in Taiwan. The sink was cut to remove the thin stainless steel retaining braket off the PIII sink. The center flat that says ASUS was removed from the stock NB HS. The retaining bracket locking tabs were streched a bit then it was installed into the ASUS NB sinks fins. Then the fan was slid onto it's locking bits. Time and work...Yes. Cost...$2.50.
A good 40mm fan could just be bonded to the stock NB sink but that flat bit in the center would block alot of air. The same fan could be bonded on the side of it blowing across but that is not the hot set-up
For bonding fans to things I like GOOP silicone adhesive much better than super glues. The fan has to be held inplace over night with a couple bits of tape but for long term use the fan will remain attached better IMHO with GOOP.
This fan is fairly quiet at 12V and will start/run at 5V.
...Galvanized