Deleting Administrative User?

Is it possible to delete the admin user in error? It says administrator next
to my name but I can't do ANYTHING w/o pop-up stating I don't have access,
see admin. I deleted another user name and when I rebooted, my personal
desktop shortcuts were gone and i keep getting pop-ups saying i don't have
access to files. Is it possible I deleted the wrong user name even though
system says i'm the admin? Will I have to 'restore' the harddrive and lose
everything? No, I don't have backup discs. Any help is MUCH appreciated!

~ Uniquity