Window XP Server not logging in? with other windows

I have installed Windows 98 SE on C drive, Windows XP Professional on Drive D (NTFS) and Windows XP Server 2003 on Drive E (NTFS). I have taken ghost images from all these drives. When i run / load my xp server ghost image on other pc in my lab with the same specification and hardware architecture (i mean to say windows 98 and XP professional are both working with out any trouble). But XP Server in not logging in. Can you any body help me out from this trouble because the time of our students are wasting. I will be very Thankful.