Hi Swataz and welcome to our community
Oddly enough, I saw reported on a list I subscribe to, that a
company was having issues making Microsoft Internet Explorer behave
with a certain application. After calling Microsoft directly and
paying for the support contact, guess what they were advised by
official Microsoft support personnel? Install Firefox!
As for the image quality, you can normally control that by
increasing the quality for either the entire Captivate project
(note that this will affect your end resulting file size, but that
should be expected) or on a "per slide" basis by examining the
slide properties.
Cheers... Rick