get this conductive pen.
http://www.radioshack.com/product/index.jsp?productId=2104395
make sure you have electrical tape.
the first picture is a reference guide to the a socket 775 cpu looking down on the contact sides as though the cpu was placed on its heat spreader. the pins you want to use are G29, G30, and H30. (note* this picture was taken out of the intel datasheet for the lga 775 SOCKET, so i had to flip the picture horizontally, thus making the numbers backwards, BUT they are in the correct location for the cpu now.)
S775 cpu pin diagram *picture 1*
they are a 3 bit digital logic for determing FSB.
G30 H30 G29
0 0 0 1066 fsb (266 x 4) target #1 [2.4 ghz]
0 0 1 533 fsb (133 x 4)
0 1 0 800 fsb (200 x 4)
0 1 1 666 fsb (166 x 4)
1 0 0 1333 fsb (333 x 4) target #2 [3 ghz]
other codes are currently reserved
your cpu is currently setting a 0 1 0 signal, so all you need to do is make a trace from H30 to either other pin to make a 0 0 0 signal. However, since you ultimately want 1 0 0, it would be better to connect H30 to G29. the 2nd picture has the pins silvered for H30 and G29. the Blacked out pin is G30, which you will cover with a small piece of eletrical tape (color coded for your convenience).
pins to mod *picture 2*
make sure you tape off the H30 and G29 pins, so no conductive ink touches anything else. as the picture indicates, i've actually covered the edges of the pins to make sure my taped off section is sufficiently marked off. you don't need to cover the pins, just simply have them touch. this is a light digital signal voltage, not a heavy current carrying wire. (indicated by picture 3)
taped off conductiive ink *picture 3*
picture 4 shows a small piece of electrical tape covering G30, while H30 and G29 are still traced together.
blocking pin for 1333 fsb *picture 4*
from researching info about the 945G and 965G chipsets, i've discovered that none of them lock the pci express bus, so their FSB overclocks are severly limited without raising the pci express bus, but the pci express bus can only do 115 - 120 MAX before you start losing the ethernet port and sata drives no longer detect. However, when you raise the cpu FSB using the pin mod, it tricks the mainboard into thinking the cpu is SUPPOSED to run at that speed without any FSB overclocking, yet. hopefully, you can acheive 1333 fsb on the cpu and THEN be able to clock it a little higher. be aware, at 1333 fsb, your ram is running at its max frequency of 667 (all are at the base fsb of 333.). you may want to set your ram on a divisor, so it runs slower to see how high you can clock the cpu/board first, and then see if you can get the memory to match. if you have ddr 800 memory, you would be able to clock all the way to 400 fsb... your only limitation would likely be the board pci express clock. a stock 40 fsb overclock w/o increasing pci express bus, and most people get ~75 fsb overclock after setting the pci express bus to ~115. 333 + 75 would put you over 400 fsb.. at the limit of your ram.
@ akumex,
since you are at 0 0 1 for 533 fsb, you want a 0 1 1 for 666 fsb... simply cut a small piece of electrical tape and cover H30. i modded my pentium d 805 for 800 fsb and it posted at 4ghz, but i had to pull the fsb back down to 190 and run the cpu at 3.8 ghz for it to be stable in windows.