cwindowsxp-

I have 4 O.S. Vista-1nos and XP sp2 - 3nos. Vista, xp,-3*, xp-2*, xp-1* is the booting order. Due to some reason i restored xp-2* just after all instalation and i lost xp-3* from the boot menu. When i try to repair it using install CD it is not showing in it. Only C:\windows(XP-1*)...