What web browser are you using? What are you trying load with flash..Youtube?
If you are using IE try using FireFox to see if that works.
You might want to try going back to the Adobe web site and installing it again.
On two different websites, one a major player, I get the following message: "You need to download the latest version of Flash player to use this player." I have downloaded and installed the latest version but this message keeps coming up. The computer is a relatively new E-Machine by Gateway and the OS is Windows XP Home (installed a new hard drive with XP because I didn't like Vista). Total physical memory is 1,024.00 MB. Any suggestions?