Well as Boolean can only represent 2 values, true and false, I can see how can you convert an enum to bool.
Still you can establish some rules and say at ex. that if value of enum is 0 than is false, otherwise it is true.
A function will look like this:
Public Function GetBoolFromEnum(e As MyEnum) As Boolean
Return CInt(e) = 0
End Function
Enum MyEnum
asdf = 1
fdsa = 2
tre = 3
End Enum
Cheers