Deleted column in a Table linked to 35,000 entries!

Well, I sure could use some advice (& sympathy). In my Access program I
have a small table (200 entries) linked to a main table of over 35,000
entries. While trying to enter a small amount of data into a new table
(linked to the main table), I deleted the Zip code column. As you can
guess, now the large table doesn't have a zip code column. SO! Can
anyone pls tell me if I'm SOL on getting those ZIP Codes back(!), or,
at least how can I add that column again (even if it is blank) so I can
begin to re-enter the zip codes? I've tried adding a column and naming
it "Zip Codes", but this column isn't recognized as a zip code column
when trying to print out mailing labels (And any new column added
doesn't stay in the proper place after the "state" column--once I close
the program the new column shows up at the far left instead of where I
added it.
Yikes. Thanks for any advice. I'm obviously not very familiar with
Access, so layman terminology is helpful. Thanks again!!

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