I already success Mod my E4300 from 1.8Ghz to 2.4Ghz. FSB from 800Mhz to 1066Mhz. Before you Mod, u must make sure your motherboard support 1066Mhz FSB.

For safety you must use conductive pen. But conductive pen very expensive. price around RM80.00. you can but at RS Electronic.
cannt solder because solder very hot. our processor cannt higher than 100C. but solder already higher than this temperature. I stay at Penag. If you want you can send your computer to my house I Mod for you.