I can't believe I'm about to help a Blightie, *shudders* but here goes...
When that happens, Dobraine:
1. Don't click your mouse anywhere on the screen, your cursor will still be "live" (blinking) in the body of your PM somewhere until you click out of it;
2. Ctrl-A to select all text in your message;
3. Ctrl-C to copy it; and
4. Ctrl-V to paste it into Word, NotePad, or some such.
After reconnecting, you can simply pick up where you left off.
~Mazzrah~
Mistress of the Undead
Leader of Stand and Deliver