I have bought a striker extreme with overclocking in mind but the idle temps without speedstep enabled is around 55C and load 64-65C so i have had to order some water cooling before i overclock, previously i had a p5b and overclocked it to 3.0 ghz and the temps under load never went over 41C, does the striker usually run this hot and will it get cooler the longer the artic silver is on, as it says it takes 200 hours to set or something.

I think you may have not seated the heat sink correctly, as the motherboard should not have any or little temperature change. Also yes all thermal pastes have a set time to set and become to its full efficiency. Id try reseating your heat sink first!
02coled

Core2DuoE6600ES @3.6ghz
2gb Elipedia 1066mhz5,5,5,15
EVGA 680i
BFG 8800 GTS-OC 320mb
680w Thermaltake Purepower
2 x 250gb Sata
Vista Home Premium

with you saying that im know its not seated properly when i put it on first time it went on no problem but i needed to replace the artic silver so i removed it a week later and i couldnt get the last peg in properly three slipped in easy but the last one just wont go in ive applied a lot of prssure to the point i thought i was gonna damage the board, the fact that theres not much room between the heat pipes and the cpu heatsink doesnt help, so i gave up its 3/4 the way there but it just wont go anymore, the water cooling is on the way now anyway so i hope i wont have same problem with that. Thanks for the help jogging my poor memory.

IMO, watercooling is an unnecessary added expense, not to mention more maintenance. If you had installed the HSF properly, I'm sure your temps would have been fine.

Why did you feel you needed Arctic Silver? Didn't the stock HSF come with a thermal pad preinstalled? Did you use AS in addition to the pad? If so, that's another reason the temps are high. You should use either the pad or AS, not both. And when applying the AS to a quad, you should use a small thin line running parallel to the cores, not perpendicular to them. The amount of paste used is generally described as a dab approx the size of a grain of rice. It should have been placed as a "line"...not spread out over the CPU. When the heatsink is installed, the paste will spread out as needed.

http://www.arcticsilver.com/pdf/app...

The p5b with quad came pre installed paste not pad when i took the cpu out and put it in my new board the old paste had slightly cracked off so thats why it was replaced with new stuff and i did follow the instuctions at the artic silver website.I think the problem is the peg holes on mb iThe heat sink and fan goes on nice on the p5b mb easy pops in but its one specific hole on the striker which is stiff ,maybe to small i dont know but it just wont go in

Your still going to need some fans to cool the heat-pipes surrounding the cpu socket which are connected to the mosfets and chipset etc!
Unless that is you have gone for a complete water cooling setup?
Did you do the pins up starting at one corner then going to its opposite and then vica-versa. Also on the stock HSF it does require quite some pressure to press it down and lock into place.
If water-cooling is already ordered and on its way, you might as well keep it and hope it used a nut and bolt back plate system!
02coled

C2D-E6600ES-8x425-@3.4ghz
1:1 Ram : CPU
2gb Elipedia @ 850mhz
EVGA 680i
BFG8800GTS-OC 320mb @630-2010
680w Thermaltake Purepower
2 x 250gb Sata2
Vista Home Premium32

I did do it up in opposites it just wouldnt go in. Ive got plenty of fans if needed also asus provide a fan that attaches to the heat pipes but they say it should only be used for water or passive systems so ill use that, the water cooling is a thermaltake bigwater 745 i think its got the plate system you r talking about if not and i still cant get it on ill take it to a shop let them do it. Thanks

Don't use the Asus fan use your own! Should be extremely easy, just follow instructions that come with it. Id be interested to hear your progress in overclocking when you install the water cooling compared to previous air cooling?
02coled

C2D-E6600ES-8x425-@3.4ghz
1:1 Ram : CPU
2gb Elipedia @ 850mhz
EVGA 680i
BFG8800GTS-OC 320mb @630-2010
680w Thermaltake Purepower
2 x 250gb Sata2
Vista Home Premium32

I'll post my results when im done and during as ill probably need advice at some point.