With IE8, I can't access my address book with Win Xp.... From the (TO button just keep getting a problem message...went back to earlier version, but of course that is no longer supported .....works ok in Vista
from what i know, IE8 doesn't work well with XP computers. but, what you can try is switching mail versions. works most of the time. if it doesn't, then try downgrading your browser to its orignal version.