HexToInt?

Function HexToInt( HexStr$ )
	Local n=0, tmp$=HexStr.Trim().ToUpper()
	For Local i=0 Until tmp$.Length
		If tmp[i]>47 And tmp[i]<58 Then n=(n Shl 4)+tmp[i]-48 ElseIf tmp[i]>64 And tmp[i]<71 Then n=(n Shl 4)+tmp[i]-55 Else Return n
	Next
	Return n
End Function

BMaxified and optimized :)