Do you need certain software or a certain program to be able to watch streaming video's or trailers on the internet? Every time I try and watch one the video and sound goes on and off every few seconds and takes over 30 minites to be able to get to the end of a 4 or 5 minite video. I'm using winows Vista on a HP Pavilion slimline computer and using a dial up connection

using a dial up connectionThat's your biggest problem. Most streaming video and audio is now assuming that the end user has a broadband connection.

Do you need certain software or a certain program to be able to watch streaming video's or trailers on the internet? Everytime I try and watch one the video and sound goes on and off every few seconds and takes over 30 minites to be able to get to the end of a 4 or 5 minite video. I'm using winows Vista on a HP Pavilion slimline computer and using a dial up connection
Test your connection compared to what's available:

CNET Bandwidth Meter Speed Test - Bandwidth Test (http://reviews.cnet.com/7004-7254_7-0.html)

You need to upgrade to a faster connection or you can download the whole file to your local disk and watch it from there...