stsadm.exe syntax when adding users in a one-way trust

Hello Community

    When establishing a one-way trust relationship there are 3 stsadm.exe commands that have to be entered. 

    Also I don’t know why these commands have to be entered.

    But the first one is works fine:

        stsadm -o setapppassword -password password
 
    As for the second command a couple of variations exists but of those commands there are 2 that seem the best but getting the syntax correct is the problem. For example lets say the trusting forest name and it's domain name is the same which is “ssite.scity.sstate.us”. Now of the following 2 commands, how would I apply my trusting forest name/domain name and which one to insert it into:

    1) stsadm-o setproperty-pn peoplepicker-searchadforests-pv"forest:sharepointforest.com; trustedforest.com,trustedforestusername,password"–Url http://webApp

 2)  stsadm.exe -o setproperty -pn peoplepicker-searchadforests -pv "trusted forest name,trusted forest name\trusted forest username,password; domain:trusting forest name,trusting forest name\username,password" -url  myWebAppUrl

    There is also a third command which I have yet to use in the sequence of these commands
because it looks like it may have been already applied in command above:

   3) forest:trustedforestname,user1,password

   In practice when you apply permissions there are scenarios when you have to apply permissions.  The above syntax seems to only apply to "people" so once I get that syntax right how would I change that syntax to apply to the different "groups" that those usernames will be added to?

    Thank you
    Shabeaut