how can i install solidwork 2012 ?

click>click>click>finish

1. Try copy and pasting the install files to the hard drive first. (this also results in a faster install)
2. What is the error message?
3. Close down any other programs, especially anti virus software (make sure all the processes for this are shut down)
4. Make sure you have full admin right or at least right permission, to where you are installing

-Rohit
Online SolidWorks Training
<a href="http://solidwize.com" onclick="window.open(this.href); return false;">Solidwize</a>

here is the attachment which will tell you how to install