Cookie problem in IE and FF when login in on Admin Console

I have not been able to login on the Admin Console of WLS 8.1 with Internet
Explorer 6.0 or Firefox 1.0.7, but, my IE&FF always gives me the following
message:

"The Weblogic Server administration console requires that browsers support
session cookies. Please update the browser configuration and try again."

For IE, I went to Tools-->Internet Options-->Privacy-->Advanced->Checked the "Override automatic cookie handling"--->checked on "Always allow session cookies".
Then deleted the previous cookies,deleted offline content. And clicked on "Sign In" button again. But again its showing me the same error.

(I did similar settings for FF too but no way)

Where am I going wrong?

Thanks in advance

Hi Paul,

I am not sure of the IE stuff. You may have to install the plug-in for FireFox. I had to install a plug-in when I was trying to use Fire Fox.

Thanks,
Shravan