Temp monitoring prog

Looking for a (free) prog to monitor temp, fan speeds (4) and voltage. M/Board is a Gigabyte GA-81G with an Intel P4 3Gb chip and 1Gb ram. Case has 3 fans plus CPU fan. Any suggestions?
Ta

OMG

mbm.livewiredev.com/

And you've got a 3GHz P4 chip, not a 3GB P4 chip.

Thanks Radical - and you're correct on the chip thing. Just take a look at my signature and you might understand why it got presented that way. Not deliberate - it left my head the way you wrote it (and a couple of beers does not help)