edited build.prop and restarted , guess what ..

hi .. i copied build.prop to sdcard , edited the one in system and it was ok , i replaced the one on sdcard back and restarted it didnt start (stucks on the logo thing)
i read this : http://forum.xda-developers.com/show....php?t=1927198
and followed the instructions but when i run "chmod 644 build.prop" i get :"no such file or directory"
same i tried to pull and push it , i got the same message when trying to pull
so i pulled from the sdcard and pushed to the system and restarted .. didnt work
i used these for pulling and pushing

Code:

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adb root
adb remount
adb pull /sdcard1/build.prop
adb push build.prop /system/build.prop
adb shell chmod 644 /system/build.prop
adb reboot

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i still don't know what to do and i hope you help me .. you'all are my last hope :\
note: i need to not wipe data