More information about your computer would sure help.. Operating system? Make and model? Etc.
In the meantime, if you haven't, please disable all popup blockers on the browser you're using.. Along the same line, if you've installed a specialized HOSTS file, rename it to HOSTS.txt and see if it now connects correctly.
Next, if that doesn't help, try installing the latest Java on your machine per the instructions below:
Click on the link to Sun's Java below, then scroll down and click on the ''Java SE Runtime Environment (JRE)-JRE 6 Update 16'' download button. Follow the prompts, select the Windows platform and the "Language", accept the license agreement, then download the full ''Windows OFFLINE Installation'' file to your desktop,(about 15 MB), scan it with your antivirus (just to be sure it's clean). Once that's done, if you've already got a Sun Java version on the computer, open the Control Panel, double click on the ''Add/Remove Programs'' section, then uninstall all previous versions of the J2SE Java listed there. Once that's done, then install Java JRE 6u16 from the downloaded installer.
And if that doesn't fix the issue, please try installing a secondary browser such as the free one from Firefox at the link below.. If Firefox works correctly, then you know your Internet Explorer is the problem.
Hope this helps.
The software is installed successfully. It does launch and opens to a login page but after logging in, the page does not open. They say login info is perfectly ok; the problem is with computer. Help