1 - First of all you will need to set up a free Codemasters Online
Gaming (COG) account. To do this, go to
http://www.codemasters.com/cog/
and follow the on-screen instructions to create a new account.
Once you have completed this section, an activation e-mail will be
sent to the e-mail address you provided. Check your e-mail and follow
the link to activate your account.
2 - Next you need to set up a subscription in your COG account.
Once your COG account is active, log into it to create a new subscription.
Click on the 'Click here to create a new subscription link'. From the
drop down product list, select Dungeons & Dragons Online BETA.
Enter your beta registration key in the next field. Your registration
key is:
8888-8888-8888-8888-8888
Important: If you attempt to use the registration key before the date
specified above, then you may receive an error.
Finally, type the word you see in the box to confirm you are human
After submitting this information you should see a message saying
'Your subscription to Dungeons & Dragons Online BETA has been created
successfully.'
3 - Download and install the game client
If you haven't already done so, now's the time to download and
install the Dungeons and Dragons Online game client. You can download
it via our exclusive BETA download partner:
http://www.fileplanet.com/download.aspx?f=160328
The client is approximately 1.7GB in size so it might take some time
to complete! Once download has completed, double-click the executable
to begin installation. Follow the on-screen instructions throughout
the installation process.
4 - Play away!
Once installed, run the DDO game client. A window will appear asking
you to enter your login and password. Here you should input the COG
username and password you chose in step 1. The game may patch itself
at this point. Once complete, simply hit the 'Play' button and we'll
see you in Stormreach!
copy pasted from a codemasters email, hope it helps.