My iPad 2 64GB has no software update on the general settings and for some reason ITunes has been removed off my iPad. (I never deleted it)
You need to connect to iTune (computer) to update software
Since you're running pre iOS5, you need to plug your iPad into your syncing computer, open iTunes (likely update iTunes) and do the update that way.
Read further down in those instructions to the ones about updating via iTunes.
Check your restrictions
I don't know my password because I never made one
Someone must have set restrictions on your iPad.
Retrieving data ...