What do you mean? In general, provided you've got a motherboard with a half decent BIOS interface (which I'm sure that Abit board has), it's not too difficult provided you don't immediately push things as afr as they'll go. You do it in small (or sometimes medium) steps, depending how patient you are

Basically ocing is generally easy as long as you don't make any silly moves (like supplying the cpu with a thousand volts lol, not like you could, but still).
And if you mean that cpu, then yeah, it is! It has a reputation for being easy to oc and you can get it to 3Ghz with the stock fan, provided you have some decent airflow in your case. With an aftermarket cooler however, such as the tuniq tower or the freezer 7 pro, you could get it all the way up to 3.5Ghz, maybe 3.6. You don't see much difference at those speeds anyway.
There's some good guides in the ocing section of this forum which take you through it all. You should have a look, it's easier than you think. And if you do have any problems than you've got the guys on here who'll be willing to help you