I have a worksheet that is exported from another source, and the signs in it
are trailing.

I need to get the signs to be proper for Excel to handle them. Currently,
they're numbers like 123 and 99-.

I thought that you could add a signed number, like a +0 to the contents of a
spreadsheet, and make it come out right, but cannot find out how to do that
in the version of excel I am using.

Is there a way to convert this on import, or is there a macro or other set
of menu commands that Microsoft seemingly has hidden from me?

Thanks

S