Forgot to set drive letter in EasyBCD

#1
hello im new here,

i had windows 7 at the first i installed ubuntu using wubi and edited it on easybcd after it i pressed save settings but i forgot that it wasnt windows 7 drive letter but the drive BOOT i dontknow how to enter BOOT drive ! if i run my other os (i have triple boot) windows 8 developer preview it says the same problem but if i run ubuntu it doesnt display that problem but i get grub !!
please can someone help my????
at this time im trying to burn windows vista to dvd-rw with my notebook.

is there anyway to edit BCDedit without entering windows?
or is there a way to edit BCDedit with grub????????????????

Addendum:

Fixed using http://www.sevenforums.com/tutorials/2083-system-repair-disc-create.html and http://www.sevenforums.com/tutorials/2676-bcdedit-how-use.html
 
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