I would like to build a variable IF statement, that is being run in VBA code,
that draws the operand (, < , = , =, <=) from a cell on the spreadsheet.
The purpose is to permit the user to test a variety of conditions (which the
rest of the code does). Sort of like allowing the user to build an SQL query
on the fly.

For example:
I want to replace the following code:
If Signal 0 and Signal < 100 then
'do something
End if

with something like this:

Dim strOperand1 as string, strOperand2 as string

If Signal strOperand1 0 and Signal strOperand2 100 then
' do something
End if

strOperand1 and strOperand2 would contain, for example, "" and "<",
respectively. Each of these values would be entered by the spreadsheet user
into a cell directly (which is range named - so that strOperand1 =
Range("Operand1").value - for example).

I've tried & Evaluate(Operand1) & , but that doesn't work.

Any suggestions would be greatly appreciated!