Copying the text of a messagebox

When a customer gets a messagebox (for example an errormessage), they mostly take a printscreen, copy this bitmap in a Word-document and send it to my already overloaded mailbox.
Those customers who do think about my mailbox size, are manually typing the text from the messagebox in an email.

It's much easier to just copy the text of the messagebox to the clipboard by pressing <Ctrl>-<C>.
You'll get something like this (an example coming from the Database Configuration Application of Microsoft Content Management Server):


---------------------------Stop service?---------------------------In order to continue, the IIS service and all dependent services must be stopped. Do you want to stop IIS now? Answering No will exit this program.---------------------------Yes No ---------------------------