My samsung galaxy tab 10.1 isnt visible on my computer. see details below to help

i connected samsung galaxy tab 10.1 to a computer turned windows update on and automatic updates was already on. my samsung tab couldnt be seen/wasnt visible. wwindows update wasnt of much help as it indicated that 4 of the required drivers,it didnt have. on the windows 7 compatibillity center website, where do i go for extra help. my device cannot be seen on my computer,i wanted to add some data on my tab. thx