|Some things aren't clear.|
re: "Can this formula be modified to highlight the entire row where the match is found?"
The entire row, as in Ax:XFDx or "entire row" as in Bx:Cx?
re: "If RK707G is in Column B and RK707 is in Column C and the target is entered as RK707, then RK707G is highlighted in Column B."
What do actually want highlighted? The cell that contains RK707 as an exact match or all cells that contain RK707 as any part of the cell? (VBA Find works the same as the Excel Find function. It can match entire cell contents exactly or do a "partial find" and find RK707G when searching for RK707. If you want it to find both, it can.)
re: "Note I'm using this with conditional formatting to highlight the match in a different color to show where the match is as I'm entering values. "
You've lost me there. If you are using VBA to highlight the matches and retain the highlighting even after A1 changes, you don't need conditional formatting anymore. The macro actually fills the cell with the chosen color (Interior.ColorIndex = 6) which will never change unless you manually change it.
In other words, CF is not even involved in this process.
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