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The point-n-click way to do this in PHPMyAdmin 2.6.1 is:
1) Select your XOOPS database in the drop-down menu in the left sidebar.
2) Click the 'xoops_catads_ads' link (your table prefix may not be 'xoops').
3) Click the 'pencil' icon alongside the item 'view' to edit that entry.
4) Change the 'Type' from 'TINYINT' to 'SMALLINT' (or even 'INT').
5) Press 'Save'.
SMALLINT (un-signed) enables you to store numbers ranging from 0 to 65,535. Which should cater for even the most popular classified ad!
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