"OE removed access to the following unsafe attachments in your mail".

From Tools >>> Options >>> Security Tab. 
Untick "Do not allow attachments to be saved or opened that could potentially be a virus".

Microsoft have a support article about this issue in OE for a Windows XP SP2 PC which can be found at :-
http://support.microsoft.com/?kbid=843018

Quote

"Warning The "Block images and other external content in HTML e-mail" option is a security feature that has been included in Windows XP SP2 to protect your computer against junk e-mail (spam).

We recommend that you do not turn off this option.
Click Start, point to Programs, and then click Outlook Express.
On the Tools menu, click Options, and then click the Security tab.
Click to clear the Block images and other external content in HTML e-mail check box.
Click Apply, and then click OK."

If you don't want to turn the option off permanently, open the e-mail and then go to view and click on blocked images which should then show them.

Clicking on a link in OE fails to open the url.

1). Check IE is set to open links

     http://www.oehelp.com/ielnk.aspx
     http://inetexplorer.mvps.org/answers/26.html

2). Try re-registering Internet Explorer

     From start >> run >>
     type iexplore /rereg

3). Try re-registering the dll files:-

     From start >> run >>
     type regsvr32 urlmon.dll     

     Repeat with the following dlls

     regsvr32 Mshtml.dll
     regsvr32 Actxprxy.dll
     regsvr32 Oleaut32.dll
     regsvr32 Shell32.dll
     regsvr32 Shdocvw.dll

     http://support.microsoft.com/?kbid=281679

See my View Headers tutorial here

There are several free pop-up stoppers available.

My favourite is the google toolbar.
Yahoo also offer a free companion which can stop pop-ups.
Pop Up Manager is free for personal use and works in IE 5 + 6.

Browsers such as Mozilla and Opera offer their own pop-up stoppers.
IE add-ons such as Avant Browser & Myie2 also contain popup stoppers along with other features such as tabbed browsing.

Continuous pop-ups could be indicative that you are infected with a virus or malware,
Follow the instructions in the security help page.

It is most likely that your browser has been hijacked.
Follow the instructions in my help page here.

Change the settings from your browsers menu bar.
View >>> Text size.

Another setting that can change your font size is:-
Control Panel >>> Accessibility Options >>> Display Tab.
Using "High Contrast" will set the font size large.

Microsoft have a knowledge based article on how to do this at:-

http://support.microsoft.com/default.aspx?scid=kb;EN-US;q318378

Check out my page here.

Yes!

AV programs only provide protection against virii and worms etc.
A Firewall protects against unauthorised access into your PC from hackers.
More info here.

This could be something as simple as a tracking cookie which will send information back to a site about other websites you visit. It could also be an application that causes your PC/browser to perform in strange ways and send information back to the author about your PC.
More info here.

No!

It is not advisable to have two different AV's running on one PC as this often causes application conflicts.

If you have a decent AV program on your PC and you make sure the virus patterns are kept up to date, there is no need to install another.

Certain LSP install a file onto your PC and the removal of this malware can cause TCP/IP to "break".
See my page on repairing TCP/IP here.

Download unbrand.vbs from http://www.dougknox.com/utility/scripts_desc/unbrand.htm

From the start > run > type in
control userpasswords2

 

Right-click the notification area > Properties.
Under the Notification area heading > Customize.
Find the Safely Remove Hardware icon > select "Always hide" in the "Behavior" column next to it.