delete a row in a table but id column of row should remain and all other record must be shift

hi,

i m doing a stuff where i need to delete a row but i need to delete a row in a table but id column of row should remain and all other record must be shifted upward using sqlserver 2005

example

So , now i need to delete alan from table but id will sustain and brad and george will shift upward like

how can i use this concept in my project

regards

aziz