I just touched my southbridge and nearly burnt my finger.

Asus, in all their wisdom, didn't provide a southbridge cooling solution on the P5N-E. I guessed it could probably fend for itself, but clearly that's too hot. So has anyone got any recommendations for a good southbridge cooler? I don't want to spend much, and bear in mind that my 8800GTS is just above it so there isn't miles of cooling. Would a northbridge cooler suffice? Or are the mounting holes different?

I was looking at the following:

Zalman ZM-NB47J Northbridge Cooler