Lookup between 2 sheets

A greyhound rescue group just deleted part of their data on a spreadsheet - all the adopter names! The sheet has the adopter number but the name column is gone. On another sheet they have an older somewhat smaller version including names and adopter number. I want to look up the adopter number on the damaged sheet, match it to the adopter number on the old sheet, pick up the adopter name on that sheet, and enter it into the blank cell next to the adopter number on the damaged sheet. I tried a couple lookup functions but I seem to be entering a bad range or something.

Originally Posted by bonny24tycoon

If you could attach the example workbooks with some examples, we could achieve this for you....

Wow - Thanks! The two sheets are attached (I hope).

SergioAdopter Database no dupes.xlsAdopter Database no names.xls

Sergio

@ SergioSimonelli

Based on your last post it seems that you are satisfied with the solution(s) you've received but you haven't marked your thread as SOLVED. I'll do that for you now but please keep in mind for your future threads that Rule #9 requires you to do that yourself. If your problem has not been solved you can use Thread Tools (located above your first post) and choose "Mark this thread as unsolved".
Thanks.

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@bonny24tycoon Can you explain how you did this?

Thanks for the tip - will do!

Originally Posted by Cutter

@ SergioSimonelli

Based on your last post it seems that you are satisfied with the solution(s) you've received but you haven't marked your thread as SOLVED. I'll do that for you now but please keep in mind for your future threads that Rule #9 requires you to do that yourself. If your problem has not been solved you can use Thread Tools (located above your first post) and choose "Mark this thread as unsolved".
Thanks.

Also, as a new member of the forum, you may not be aware that you can thank those who have helped you by clicking the small star icon located in the lower left corner of the post in which the help was given. By doing so you can add to the reputation(s) of those who helped.