You have to look at the dbx files for the size.

Tools | Options | Maintenance | Store Folder will reveal the location of
your Outlook Express files. Press the Tab key to highlight the folder
location, then Ctrl+C. Close OE, then StartRunCtrl+V will put the location
in the box - Click OK and you'll see the OE files. Otherwise, write the
location down and navigate to it in Windows Explorer.

In Windows XP, 2K & 3K, the OE user files (DBX and WAB) are by default
marked as hidden. To view these files in Windows Explorer, you must enable
Show Hidden Files and Folders under Start | Control Panel | Folder Options |
View.
--
Bruce Hagen
MS MVP - Outlook Express
~IB-CA~

"Wendy Hill" wrote in message
...
Hi,
How do I know the size of my local folders in OE? Someone here said that
they should be kept under 100 Mb. I just don't know how to find out.
Thank you.
SH