NOTE: This applies to master head, 0.7.2 (Dev) as of 5/26/2011. It does NOT apply to 0.7.1.x

Configuration Changes

StandaloneCommon.ini

[LoginService]
... 
SRV_FriendsServerURI = "http://127.0.0.1:9000"
SRV_IMServerURI = "http://127.0.0.1:9000"

[HGInventoryAccessModule]
...
Gatekeeper = "http://127.0.0.1:9000"

Add this new section somewhere:

[Messaging]
 ; === HG ONLY ===
 ;; change this to the address of your simulator
Gatekeeper = "http://127.0.0.1:9000"

Robust.HG.ini

[Startup]
ServiceConnectors="...,8002/OpenSim.Server.Handlers.dll:HGFriendsServerConnector,8002/OpenSim.Server.Handlers.dll:InstantMessageServerConnector"

[LoginService]
... 
SRV_FriendsServerURI = "http://127.0.0.1:8002"
SRV_IMServerURI = "http://127.0.0.1:8002"

[UserAgentService]
...
PresenceService	= "OpenSim.Services.PresenceService.dll:PresenceService"
FriendsService	= "OpenSim.Services.FriendsService.dll:FriendsService"
UserAccountService = "OpenSim.Services.UserAccountService.dll:UserAccountService"

Add these new sections at the end:

[HGFriendsService]
LocalServiceModule = "OpenSim.Services.FriendsService.dll:FriendsService"
UserAgentService = "OpenSim.Services.HypergridService.dll:UserAgentService"

[HGInstantMessageService]
LocalServiceModule = "OpenSim.Services.HypergridService.dll:HGInstantMessageService"
GridService = "OpenSim.Services.GridService.dll:GridService"
PresenceService	= "OpenSim.Services.PresenceService.dll:PresenceService"
UserAgentService = "OpenSim.Services.HypergridService.dll:UserAgentService"
; This should always be true in the Robust config
InGatekeeper = True

[Messaging]
   ; If you have an Offline IM server, set the vars in this section, so that
   ; incomming IMs to local users from foreign grids can be saved
   ;
   ;# {OfflineMessageURL} {OfflineMessageModule:OfflineMessageModule} {URL of offline messaging service} {}
   ;; URL of web service for offline message storage
   ; OfflineMessageURL = http://yourserver/Offline.php

   ;; Control whether group messages are forwarded to offline users.
   ;; Default is true.
   ;; This applies to the core groups module (Flotsam) only.
   ; ForwardOfflineGroupMessages = true

GridCommon.ini

[HGInventoryAccessModule]
...
Gatekeeper = "http://127.0.0.1:9000"

Add these sections at the end:

[UserAgentService]
 ;
 ; === HG ONLY ===
 ; Change this to your user agent server (HG robust)
 ;
UserAgentServerURI = "http://mygridserver.com:8002"

[Messaging]
 ; === HG ONLY ===
 ;; change this to the address of your Gatekeeper service
 ;; (usually bundled with the rest of the services in one 
 ;; Robust server in port 8002, but not always)
Gatekeeper = "http://mygridserver.com:8002"

Troubleshooting

If you get an exception like this:

23:16:24 - [LLOGIN SERVICE]: Exception processing login for Ruth OpenSim: System.ArgumentException: Object type System.Guid cannot be converted to target type: System.String
Parameter name: val
at System.Reflection.MonoField.SetValue (System.Object obj, System.Object val, BindingFlags invokeAttr, System.Reflection.Binder binder,  System.Globalization.CultureInfo culture) [0x00000] in <filename unknown>:0
at System.Reflection.FieldInfo.SetValue (System.Object obj, System.Object value) [0x00000] in <filename unknown>:0
at OpenSim.Data.MySQL.MySQLGenericTableHandler`1[OpenSim.Data.FriendsData].DoQuery (MySql.Data.MySqlClient.MySqlCommand cmd) [0x00000] in <filename unknown>:0
at OpenSim.Data.MySQL.MySqlFriendsData.GetFriends (UUID principalID) [0x00000] in <filename unknown>:0
at OpenSim.Services.Friends.FriendsService.GetFriends (UUID PrincipalID) [0x00000] in <filename unknown>:0 

Try adding this to your database connection string: ConnectionString = "Data Source=localhost;Database=opensim;User ID=opensim;Password=*****;Old Guids=true;"