I did think of something that might help. There some conventions in most or all windows software that might give him a work-around. This would be to use the control combination commands to do the job. He would have to learn a slightly different way of accomplishing his task.

Cntl-A is select all.

Cntl-C is Copy.

Cntl-Z is Paste.

If these functions work for him, he will not have to deal with a reinstall of Outlook Express.