try Foxit Reader .. for me it's much better than Acrobat Reader ..
Foxit Reader 2.0 is a free PDF document viewer and printer, with incredible small size (only 1.5 M download size), breezing-fast launch speed and amazingly rich feature set. Foxit Reader 2.0 supports Windows 98/Me/2000/XP/2003/Vista. Its core function is compatible with PDF Standard 1.6.
http://www.foxitsoftware.com/pdf/rd_intro.php