Sounds like you need to update the registry. Re-Register Outlook Express as
your default mail program:
Go to Start | Run and type the following:
"C:\PROGRAM FILES\OUTLOOK EXPRESS\MSIMN.EXE" /reg
(Check the path to msimn.exe to make sure that is correct)
Make certain to include the quotations marks and the space between the
ending quotation mark and the slash.
Then open Internet Explorer and go to Tools\Internet Options\Programs and
set OE as the default mail (and news) program.

Signature
Jim Pickering, MVP-Outlook Express
Please reply only to newsgroup.
> When I try to send a reply in this forum, I get a "Could
> not perform this operation because the default mail client
> is not properly installed". I already checked under tools,
> options, programs...and E-Mail IS set to Outlook Express.
> What can I do next?
5hulses - 01 Dec 2004 00:12 GMT
Jim,
Didn't have to update registry....all I had to do was
upgrade to IE6 & get rid of Ad-Aware & Spybot. They were
messing up my registry!
Stu
>-----Original Message-----
>Sounds like you need to update the registry. Re-Register Outlook Express as
[quoted text clipped - 17 lines]
>
>.
Jim Pickering - 01 Dec 2004 00:53 GMT
Hey, whatever works. Glad to hear it's solved to your satisfaction. Thanks
for the feedback.

Signature
Jim Pickering, MVP-Outlook Express
Please reply only to newsgroup.
> Jim,
>
[quoted text clipped - 32 lines]
>>
>>.
PA Bear - 01 Dec 2004 18:53 GMT
Ad-aware and Spybot only do what you tell them to do. Their mere presence
does not mess up your registry.
The upgrade to IE6 bascially did what Jim was suggesting you do. Make sure
you re-visit Windows Update after installing IE6 SP1 for additional updates
you'll need.

Signature
~Robear Dyer (PA Bear)
MS MVP-Windows (IE/OE)
> Didn't have to update registry....all I had to do was
> upgrade to IE6 & get rid of Ad-Aware & Spybot. They were
[quoted text clipped - 26 lines]
> >
> > .