UserForm Idea Needed For Matching Columns and Changing Headers

Hi! I'd like to create a User Form that will change my column headers to be what I need for upload into my database. I'd like the User Form to show me what the header currently is, and then allow me to choose from a list what the upload header should be, and then have a macro replace the original header with the one I chose from the list. Before I went too far, I wanted to see if anyone had any ideas about the cleanest/best way to accomplish this. The original data column headers will be different every time, so I can't simply write something to look for this and change it to that. The user will need to say "this column contains this data". And there could be anywhere from 5 to 50 columns of data on the spreadsheet.

Any ideas on the best way to accomplish this? My current thought is with two comboboxes one that is populated with the range of row 1 so it shows you all of the original headers, and then the second one with all the proper upload headers to choose from. It seems like there is probably a slicker way to do this and I am hoping someone will have a better idea.

Thanks in advance!
Spacle