Vista And Xp Ntldr Missing

i need some help please i'd vista on dd C and i install xp on dd D well
after repair boot with vista dvd i use easybcd for change the boot ini
it's ok !!

i can now choose to boot on C vista or xp D drive

but when try to boot on xp i h'ad

NTdLR is missing !!!

please help

can i take the ntdlr on vista and copy paste on xp drive !!
thanks for any help