you must join the room on your group with the email from your script the normal way ( with mozilla )
than you view the source
down below you can find the cookies and the ticket and profile info
open your script
go to venculla main menu and take pasport than click edit
there you can copy and paste the info you see in mozilla
than join the group normal with your script so he takes his userol
than cloase all wiondows
go out the room with mozilla and join again with your script
and your in the room
ps : sorry for my poor englich i am from belgium 
take a look below thats the info from rumbar from free waan and it works fine
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***** If You Are Not Able To Update Your Passport, And Then Join Your MSN Group, Please Read This Post:
*Step-A- Open Your Script And Click A Right Click In The Status Window, Go To "Vincula - Main Menu" Then Choose "Change Vincula Settings..." ((Take A Look At The Following Picture))
*Step-B- The Vincula Setup Window Will Open To You, Click On The "Passports" Tab, Then Click On "Edit" ((Take A Look At The Following Picture))
*Step-C- Now!! Forget About The Script And Open An Internet Explorer Page, Then Go To ( http://chat.msn.com/ ) , And Sign In Using THE SAME PASSPORT YOU USE IN YOUR SCRIPT ((Take A Look At The Following Picture))
*Step-D- Now Type The Follwoing Link On The Address Bar ( http://chat.msn.com/renderchat.msnw ) Then Click GO Or Enter, When The Page Opens, Please Click A Right Click On The Page Then Choose "View Source" ((Take A Look At The Following Picture))
*Step-E- After The Note Pad Opens To You , Please Look For "Passport Ticket" And Highlight The Numbers And Letters After It (Starting From " To " ) Then Paste Them In New A Note Pad ((Take A Look At The Following Picture))
*Step-F- After The Note Pad Opens To You , Please Look For "Passport Profile" And Highlight The Numbers And Letters After It (Starting From " To " ) Then Paste Them In New A Note Pad ((Take A Look At The Following Picture))
*Step-G- Now!! Go Back To Your Script And Paste The Passport Ticket And The Passport Profile In Thier Places Then Click OK ((Take A Look At The Following Picture))
========== Now You Updated Your Passport And You Are Ready To Join Your Group ==========
***** Follow The Following Steps To Join Your Group Manually *****
[step-A] : How To Get The User Role?!
1- Go To Your Group Chat Room, And Make Sure That You Signed In Using The Same Passport You Use In Your Script, When You Join The Room, Click A Right Click Beside The Group Name And Choose "View Source" (See The Picture)
2- When You Click On "View Source" A Notepad Will Open To You, Then Press F3 , The Find Window Will Open To You, Then Put The Group Name And Click On "Find Next" (See The Picture)
NOTE: The Group We Use Here Is Rumbaar = G_Rumbaar
3- Now The "Find Next" Will Guide You To The User Role, And In The Picture Its Marked By Blue Between Two ' ' (See The Picture) , Now Copy The User Role And Paste It In A New Notepad Because We Will Use It To Join The Group By Script.
[step-B] : How To Join The Group By Script Using Vincula Connection:
1- Now, Click A Right Click In The Status Window Then Choose "Vincula - Main Menu" ,Then "Join Room (Groups)" , Then "Normal..." (See The Picture)
2- In The "Enter Roomname" Window Type Your Group Name With G_ , We Use Rumbaar Group = G_Rumbaar (See The Picture)
3- Now The Script Will Try To Join The Room, But It Will Stop B4 Joining Telling You "*Access was denied to %#G_Rumbaar" It Means It Couldnt Join The Room Bcoz It Needs Your User Role, Now You Will Need The User Role To Complete Joining The Room, So You WIll Go And Copy The User Role That We Got From [step-A] , Then Go Back To Your Script Status Window And Type: /prop $ role (The User Role That We Got From [step-A]) And Pree Enter (See The Picture)
4- Now The Last Step, And Then You Will Join The Room By Script, Just Type: /hop In The Status Window After You Finish Step 4. (See The Picture)
NOTE: Sorry All i Know Its A Very Tall Way, But Its The Only Way Mow!! Good Luck.