solehuddin, since you are an ametuer oc'er, i suggest you read the forum around before you start doing anything to your vcore in BIOS..
as for me, i increase the vcore ONLY after these steps are taken care of first

1. update your bios
2. get a after market cpu cooler and mobo chipset cooler (ocz are quite cheap these days)
3. be ready to know how to reset your mobo jumper if worse comes to worse, BIOS dosent boot up even
4. Increase your vcore voltage only by SMALL INCREMENTS of voltage ONLY (lets say your default voltage is 1.1v, try the next small step, eg. 1.2v, etc...)
5. Please be patient when doing oc..jumping immediately to higher FSB speed is not recommended
6. Always test run your cpu using prime95 for every increment for at least 10 minutes to see if stable or not

last but not least, enjoy oc-ing