I install the 64 bit, and then run iTunes... get an error stating webkit.dll missing, reinstall. I reinstall, get the same message. any suggestions?
Webkit.dll is an Apple Application Support dll, dave. So with any luck, the 64-bit procedure I suggest to fizzylove in the following thread may be of some assistance:
http://discussions.apple.com/message.jspa?messageID=10918603#10918603
Note: since posting the fizzylove procedure, the download location for the 64-bit iTunes installer has changed. You can now find it at the following location (at the time that I write this reply, at least):
http://support.apple.com/kb/DL1037