Microsoft Visual Studio 2008 installation error and corrupt media?!

Have you tried the trial version of Visual Studio 2008? I did! I have spent a day for downloading the file from Microsoft web site, I was so happy when finishing downloading, and I tried to install the software, however, it''s got problem!! I couldn''t install it! It gave me a message, the problem was from the .NET 3.5 framework, I went to the Microsoft forum web site to find any possible solution. It seems so many people have got the same problem!! The actual problem was the corrupt downloaded file. Some people download the .NET 3.5 framework seperately, and install it first, and then install Visual Studio 2008. Some other people download the trial version of Visual Studio 2008 again from different source. But I found, the best way is solve the corruption of the file is to download the file by using the download manager from Microsoft. When you go to the download page, you can have a look the Instruction section at the bottom of the page, like this,  Instructions Download instructions

1. Click on the image download available on this page and save to your hard drive in a temporary directory.
• Because this file is large, we recommend that you use a download manager to download it.
• If you do not have a download manager or are unsure, click here for a facilitated download.

2. Follow the ISO handling instructions below

  This is the best way to ensure your downloaded file has no corruption, I have tried many different ways such as using Flashget and other download manager softwares, but I found this is the safest method to download the complete file without error.