Domain Join to a specific OU based on Computer Name - ConfigMgr 2012 R2 / MDT 2013

Question

Hi all
i need to build an OS deployment task sequence with ConfigMgr 2012 R2 and MDT 2013. my requirement is to be able to join a computer based on its computer name. there are three types of computers. Sales / Marketing and Technical. based on the prefix of the
computer name i need to place them on 3 different OUs. Computer Names would be SAL1100, MKT1100 or TEC1100, i would like to refer first three characters of the computer name and the decided on which OU they need to be allocated to. 
i would appreciate if someone could tell me how i can do this within my task sequence 

Answer 1

I don't think you can accomplish this by using conditions. Instead I'd use the script that Jörgen provided. Here's an edit of that so that it would suit your environment requirements of the first 3 characters of the OSDComputerName:
set env = CreateObject("Microsoft.SMS.TSEnvironment")
sComputerName = env("OSDComputerName")
threeChars = UCase(Left(sComputerName,3))
sBuiltOU = "NOT_set!"
If threeChars = "ABC" Then
sBuiltOU = "LDAP://OU=ABC,OU=Computers,DC=DOMAIN,DC=COM"
If threeChars = "DEF" Then
sBuiltOU = "LDAP://OU=DEF,OU=Computers,DC=DOMAIN,DC=COM"
If threeChars = "GHI" Then
sBuiltOU = "LDAP://OU=GHI,OU=Computers,DC=DOMAIN,DC=COM"
env("OSDDomainOUName") = sBuiltOU
Wscript.quit
Save this as 'SetOU.vbs' and create a package in ConfigMgr where you specify the source content to the location where you placed the script file. As Jason described, put a Run Command Line step right before Apply Windows Settings, use 'cscript.exe SetOU.vbs'
as the command line and point to the package you created. This script assumes that the OSDComputerName variable is already properly populated with the correct computer name.
Regards,
Nickolaj Andersen | www.scconfigmgr.com | @Nickolaja