ITunes problem with windows installer package

Hello there,
Today I reinstalled my Windows 7 (x86) on my laptop and I have this problem installing iTunes. I have downloaded a few different versions from different servers but I can’t install it. It worked just fine before I reinstall the Windows. Can anyone help me to install iTunes? Please tell me the steps to install and if possible provide me a good installer.
Thank you!

iTunes
There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor.
OK
