>Hi,
>I have two tables, table1 has the following structure
>Table1: dog, howtall, howfast, furtype
>Table2: cats, howtall, hasclaws, food
>
>I have set the relationship between the two, using the field howtall
>
>Now here is my problem, after having set the relationship, I want to copy
>the table to a new table
>
>copy to newtable a->dog, a->howtall, b->cats, b->howtall
>
>But I get an error. How can I copy selected fields from two tables?
>
>Thanks
>Steve

You have howtall twice.

copy to newtable a.dog, a.howtall, b.cats

BTW, why not use SQL syntax, where you can do everything in one line?

Select dog, table1.howtall, cats from table1 inner join table2 on table1.howtall=table2.howtall;
  into table newtable

Or

Select dog, table1.howtall, cats from table1, table2 where table1.howtall=table2.howtall;
  into table newtable