Pc Help

Ok guys, I use Windows XP (pro) and I dont know what I was thinking but I disabled my ADMIN ACCOUNT from Computer management, and now I can only log into the GUEST ACCOUNT. Please does anyone know how I can re-enable my account? Im confused because it seems the only way out is to format, and that I can't afford to do. Someone please help, thanks in advance.

Try booting into safe mode (tap F8 as the computer boots) and see if you have the admin option there at logon.