The authenticated account name can be derived by using the function Get( AccountName).
In FMP11 you could use a merge variable to display it.
Have a script step run on startup.
Set Variable [$$AccountName [Get(AccountName)]
You can now place a merge field <<$$AccountName>> wherever you need it...
For earlier FMP versions you could achieve the same by setting a global field.
thanks alot Chris...that helped i cant believe i have been trying this on my own with no success