What is the difference between LIP and MUI? 

- The main difference is in the level of localization in comparison to MUI packages: LIP packages provide the desktop user with an approximately 80% localized user experience. In addition, LIP doesn't allow users to switch languages. Once a LIP is installed, all users using that machine will have the same User Interface (UI) language. LIP relies on the same resource-loading technology MUI is built upon, and installs on top of the English version

http://technet2.microsoft.com/WindowsVista/en/library/85e289ca-9fd8-4963-b06a-5ecc457006c71033.mspx?mfr=true

http://windowshelp.microsoft.com/Windows/en-US/Help/35a1b021-d96c-49a5-8d8f-5e9d64ab5ecc1033.mspx

http://technet2.microsoft.com/WindowsVista/en/library/9b4729e8-1656-48e2-bebe-5db1ae6a4fd41033.mspx?mfr=true

http://www.microsoft.com/downloads/details.aspx?FamilyID=0e21eb7b-e01a-4fcc-b7f1-30e419da7f5b&DisplayLang=hi