are you looking at creating tabs at runtime? if so have a try at something like this
I am assuming you are developing a windows application by the way
dim myTabPage as new tabpage
myTabPage.Name = "AnotherTab"
myTabPage.Text = "Just Created Tab"
tabControl1.controls.add(myTabPage)
to add controls programmatically to the tab you would do something like this
dim x as new textbox
myTabPage.controls.add(x)