From the
Using This Site section (note that Firefox is recommended):
Trouble accessing files or pages?
With almost no exception - all sites on the internet suffer technical problems from time to time. In addition to this the network itself (the Internet) can suffer traffic jams similar to those on a highway. All our links & pages should be accessible at all times & we do everything we can to correct & repair any link problems when they are exposed. During peek times some difficulty may be experienced accessing files or pages. Our own constant monitoring indicates this is usually more an ISP or network problem rather than our servers or immediate network.
You can determine the cause of your access problem in Windows by going to Start - Run & type 'tracert
www.simviation.com' & watch what happens on the black screen. Any '*' or 'timed out' indicates a connection problem. If the problem ends at our end then we are experiencing difficulties. Otherwise the problem is a network or your immediate ISP one.
Other Common Reasons for Connection Difficulties:
* Problematic Web Browser - The latest versions of Internet Explorer have default settings which can sometimes cause several problems. We recommend Firefox
* Firewall - Many user problems are resolved by switching off firewall when accessing & downloading files. Setting Internet Security settings too high in your browser or firewall may also restrict access.
* ISP (Internet Service Provider) - Providers vary widely in quality. If you feel you are getting a bad connection with your ISP - vote with your wallet - get a new ISP
Specific questions may be asked on our site forums