Actually, Symantec is still developing and licensing people for Symantec Encryption Desktop when they need standalone. If you purchased Symantec Endpoint Encryption, and are deploying it as a standalone solution, your are able to download Symantec Encryption Desktop, which is a standalone user-friendly encryption solution. We do not recommend using SEE for standalone. Simply select the top option for Drive Encryption Standalone (wihout server) when you are at the fileconnect website.
Medadsrc, were you able to decrypt with all of the resources _Adam_ provided?
The most important piece of information that you need is, with standalone SEE Deployments you MUST initiate the decrypt from a command prompt.
Please see the commandline interface guide :
Symantec Endpoint Encryption Drive Encryption 11 Administrator Command Line Guide
http://www.symantec.com/docs/DOC7716
Once you have the command prompt open, you will need to navigate to the SEE 11 installation folder, which contains the eeadmincli.exe file...
Typically, C:\program files\symantec\endpoint encryption\drive encryption
From there, the following commands will be useful for you :
eedAdminCli --enum
eedAdminCli --status -
eedAdminCli --status --disk 1 (or any disk number)
and the decrypt command
eedAdminCli --decrypt --disk 1 --au adminuser --ap adminpasswrd