Brent,
There are a number of them.
I normally use Integer.ToString
Dim value As Integer
Dim s As String
s = value.ToString("X")
s = value.ToString("X8")
As all types can support ToString.
Alternatively you can use the Hex function:
s = Hex(value)
Alternatively you could use the Format function:
s = Format(value, "x")
s = Format(value, "X")
s = Format(value, "X8")
Hope this helps
Jay