1. How much physical RAM is installed?
2. Is the swap file (virtual memory) set to a fixed size?
3. Does the client have a lot of e-mails?
When you open OE, it expands ALL the compressed volumes for the locally saved messages.
If there is not enough space combined in real and virtual memory, OE cannot open.
For W98 and Me, RAM should be between 196 and 384MB
If you have less than 128MB, or more than 511MB, you can have problems.
Virtual memory needs to be at least 500MB.
I recommend setting virtual memory so that the total of real and virtual memory is at least 1GB.
I use a seperate 2 - 5GB partition for virtual memory when I setup a system.
Next, you can estimate how many stored messeges the client has by adding up thetotal of all .dbx files on the drive.
Here is a good resource site for all things IE and OE related.
http://www.mvps.org/inetexplorer/
Chas