No, using Outlook Express on Vista is not recommended. I am not sure if it is possible.
from Tucows.com
. Outlook Express will NOT work with Windows 7 nor Windows Vista. .
Well, there you have it from the mouth of the cow.
Here is a vbery good alternative:
http://www.mozilla.org/en-GB/thunderbird/Thunderbird works well on Windows PCs. It is different from Outlook Express, but not too much. Easy to use, IMHO.
But you may not have to use a pop3 client to get your e-mail in a pinch. Many ISP companies give you web mail also.
As to your settings, you can get help from you service provider. For example, if you provider is AT&T you call the 800 number can ask for e-mail help. If you use the e-mail they provide. They can provide you a new password and tell you how to get the e-mail using the browser until you get Thunderbird to work.
Same thing for Com cast and the other major providers. Most of them have a web mail site were you can get you mail without the email pop3 client set up.
BTW:Hindsight.
Good idea to keep all passwords in a safe place other than your computer.
Also, you may wish to set you pop3 settings to NOT remove items from the server. That way you can get your old mail in case you PC does a really bad crash.