Here's some steps that worked for me in instalilng Flash player:
Please follow the steps below for uninstalling and reinstalling Flash player:
a. Download the most recent Flash Player uninstaller to your
desktop from the TechNote below. Please read the instructions in the
TechNote before running the uninstaller.
How to uninstall the Adobe Flash Player plug-in and ActiveX control
b. Quit ALL running applications, including all Internet
Explorer windows, other browser windows, AOL Instant Messenger, Yahoo
Messenger, MSN Messenger or other messengers. Check the Windows system
tray carefully to make certain no applications which might possibly use
Flash Player is still in memory.
c. Open the following folder: C:\WINDOWS\system32\Macromed\Flash
d. Run Flash Player uninstaller.
e. Check if there are files left in the folder:
C:\WINDOWS\system32\Macromed\Flash. If there are any files left inside
the folder, delete the files.
f. Download and install the latest Flash player at:
Flash Player 10,0,12,36 Active X (for Internet explorer)
Flash Player 10,0,12,36 Plug-In (for Firefox,Netscape,Safari,Chrome,etc)