Internet explorer security problem

My sister has a new dell that we finally got online....she has problems with some sites coming up with the cant find this page etc..........it is on certain sites like her banking one...im sure it is a security problem but i checked the settings and cant seem to figure out what is causing the problem...most sites load fine......could it have anything to do with the fact she has not loaded the updates for her computer at microsoft.....any help or suggestions would be appreciated.

 

Well whether or not the pages are loading properly I highly recommend you get all the security patched and updates:

Download Microsoft Internet Explorer 6 Service Pack 1

 

Hi, I have also run into this glitch- however, I fixed it, at least for my bank site: Now, I forgot if this works in anything but IE 6.0>> and as they said above- get it!

I already use IE 6.0 with latest Service Pack., so, if you do decide to install that: Open any IE page, at the top, Tools>>Internet Options>>Security>>Trusted Sites>>open that.
You need to type your banking site in the blank space like this>
https://www.xxxxxxxxxx.zzz
Then, when you hit Add, the site will appear in Trusted Sites...
The "s" makes it known as a secure website, and you should be able to get there easily, since it is placed in your Trusted Sites environment. You should only do this for sites you really trust, naturally. Your Internet settings should be Medium Security, for general browsing. For the Restricted Sites, you can set Custom Settings, and I would advise you do, since by default some things are enabled that should not be, set all things there that show as Enabled to Prompt.