Changing Calculated Values Immediately to Plain Values

Hi. I'm using the LOOKUP function to pull data onto a worksheet from a different workbook. I want the returned value of the LOOKUP statement to replace the actual LOOKUP statement. I want to do this because I am afraid that the original source worksheet will be moved/renamed/altered/whatever and I don't want the results of the LOOKUP to be affected if any of those things happen.

I know that I can do a COPY and PASTE SPECIAL-VALUE of the value that is returned in the LOOKUP function which will replace the LOOKUP function with whatever was returned. I want to accomplish the same thing but without having to do a COPY-PASTE SPECIAL:VALUE for each LOOKUP function because I would have to do this hundreds of time.

Does anyone know a better way to do this?

Not that I think this would be any faster, but if you are entering the formula and you hit F9 (rather than enter) it will return the value as opposed to leaving the formula in it.

Don't think it will be much of a time saver, there might be a better way to do it with a macro.

Thanks for the suggestion. Is there a way to use the F9 technique when COPYING and PASTING the LOOKUP command?

Not really, you would have to go into the cell (F2) and then hit F9.

Thanks for the tip. I can quickly write a Macro to eliminate a keystroke, because I am lazy.

Does anyone know of a way to write the LOOKUP function or any function for that matter to immediately replace the function in a cell with the return value of the function?