If you need to access resources in a dictionary that did not ship with Dynamics GP, you need to build an application assembly yourself. You're in luck! VS Tools includes a tool called the Dictionary Assembler Generator (DAG). You should never generate an assembly for dictionaries shipped with Dynamics GP. If you didn't install an assembly you need, rerun the VS Tools installation.
dag.exe file is in the
GP2010 VS Tools SDK folder. For you to try it out, you need a third-party application dictionary. You're in luck again!
When you installed Dexterity (I'm presuming you installed Dexterity), a sample integrating application was also installed. You can find it in the following folder:
… \Microsoft Dexterity\Dex 11.0\Samples\Develop ...