Well, you can just define a variable as being of type Range. Then you can access that range all you want via the variable name. You can also give a name to the range, but that is more for if you would want to use it in the Excel spreadsheet itself later. Example follows.
Sub RangeTest()
Dim rng As Range
Set rng = Range("A1:C3")
' Now you can refer to the Range by referring to rng.
rng.Name = "rngTest"
' You can now refer to the range either by using rng - OR, something like this:
Range("rngTest").Cells(1, 1) = 2
End Sub
Hope this helps,
Russell