Fledgling Overclock Query

My computer is probably about due for an upgrade, but as I have a Barton chip, I'm wondering whether an OC tweak with Easytune would be in order?

Problem : I don't want to fry anything .

I have a Barton 2600+ currently running at 1919mhz on a Gigabyte 7vt600 mobo with two 256MB sticks of 2700 Samsung DDR Ram.

Of itself, this may be do-able - but I need to check out a high temperature reading I'm getting with CPUCool Ver 7.3.6. Three temps are listed, the first two of which are comfortable 40s (Cel) but the third temp is around 60. I have no idea which fig refers to what - case? CPU?

So - what can I safely whack up with Easytune? (I have ver 4 as I bollocksed up the install of 5)