This is how the sysprep.inf file looks that I use in VMware, VirtualCenter, and virtual machines:
;SetupMgrTag
[Unattended]
OemSkipEula=Yes
InstallFilesPath=C:\sysprep\i386
KeepPageFile = 1
[GuiUnattended]
AdminPassword=****
EncryptedAdminPassword=No
AutoLogon=Yes
AutoLogonCount=1
OEMSkipRegional=1
TimeZone=35
OemSkipWelcome=1
[UserData]
ProductKey=xxxxx-xxxxx-xxxxx-xxxxx-xxxxx
FullName="Name"
OrgName="Company"
ComputerName=
[Display]
BitsPerPel=32
Xresolution=1024
YResolution=768
[LicenseFilePrintData]
AutoMode=PerServer
AutoUsers=9999
[RegionalSettings]
LanguageGroup=1
SystemLocale=00000409
UserLocale=00000409
InputLocale=0409:00000409
[SetupMgr]
DistFolder=C:\sysprep\i386
DistShare=windist
[Identification]
JoinWorkgroup=THEWORKGROUP
[Networking]
InstallDefaultComponents=Yes
[MS_Server parameters]
Optimization=MaxThroughputForNetworkApps
