Hi, When i try to install Adobe Acrobat reader 8.1 it complains about nppdf32.dll in Mozilla Firefox folder. Also it says in the error that I don't have sufficient access. I downloaded this dll and try to copy it into C:\program files\Mozilla Firefox folder/Plugins/ but it gives me issue of not SUFFICIENT PREVLIGES I am and administrator of PC even i am logged in as proper "administrator login" not by any other user but still getting this issue. I am using Window vista ultimate. In general it have an issue with Adobe Stuff dont know why? Help Please I really need to Install acrobat reader ????