stsadm o deploysolution

I have a hosting service that i am trying to see if I can publish a webpart using:

stsadm -o deploysolution  -name VisualWebPartFor2007Test.wsp -url http://portal.spserver.org/Development/ -allowgacdepoyment -local -force -dp me@me.org -du password

but I get 

Command line error. Invalid parameter.


stsadm.exe -o deploysolution
            -name <Solution name>
           [-url <virtual server url>]
           [-allcontenturls]
           [-time <time to deploy at>]
           [-immediate]
           [-local]
           [-allowgacdeployment]
           [-allowcaspolicies]
           [-lcid <language>]
           [-force]

how should I be formatting it