Ok,i asked GOG.com support team if i could have my cd-key for OPFLASH and i got..this answer?:
V2lu ..Oldski snip.. ANCg=--
what the heck does this means?!?!
edit Oldski : the CD-KEY is yours and not for the public, hence edited.
Please send another email to support if you don't understand what was sent.
We work normal hours GMT+1 (9am-5pm) sometimes longer.

Whoa there cowboy, take it easy. Are you using hotmail or any web based email? If so, it could be a problem with the service itself - try CTRL F5. If not, try asking GOG to re-send you the mail again

It's encoded in base64 and it means:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Codemasters\Operation Flashpoint]
"KEY"=hex:xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx
Seems like they've tried to send you a REG file but the e-mail script messed it up.
edit: Oldski - protecting @comando602 CD-KEY

heh, I never thought I'd see the day a post should be deleted.
please delete this thread, this guy posted his Cdkey instead of replying.. :(

I agree, this thread is completely useless and pointless.
And sorry for posting that decoded text. Somehow I didn't realize it's a cd-key!