After having played around with diffrent solutions I finally removed pagefil, hiberante and system restore as bhawver also suggested. My windows 7 enterpris 64bit image file is now 4,4 gb without any compresssion.
The only thing I observe now is that sysprep will not "enable" or set the pagefile when windows starts up.
I belive this is a difference between xp and windows 7. When I did the same thing in windows xp the pagefile was set automatically for windows.
Has anyone played around with settting pagfile with sysprep or gpo?