Must have had whatever version of Flash Player required for Yahoo Chat cuz it worked fine for quite some time. Then, without me doing anything, chat wouldn't work any more, and told me I had to have such and such a version of Flash and gave me a link to get it. OK, downloaded it no problem. Click on it to install and it says it's not a valid Win32 application. Few days ago somebody suggested to delete the old Flash - couldn't find one to delete. I'm stuck again. Thanks for any help.