Swap by Excel lists - I need help tips

Hello - sometimes it happens that swappers ask for a swap, send their Excel list with
doubles per mail, and ask that I should send mine.

I know for Numista it´s not needed but sometimes I have this.

Now my question:

How do you all go with this swaps with Excel lists

- is there a senseful search idea which helps with this horny job

- and is there a possibility with Excel to compare two lists??

Yes, Use "LOOKUP" function in Excel to compare lists.

what is lookup??

can you explain in more detsils

Verweis : Tobsewhat is lookup??

can you explain in more detsils

Try these links for Examples,

http://www.techonthenet.com/excel/formulas/lookup.php
http://support.microsoft.com/kb/324986