I tried upgrading my laptop with capability to redeem my OS to windows vista home premium.  You go to the website https://www.dellvistaupgrade.com/

The PC is eligible and the order has the authorization.  But the website said that my PC is not eligible.

https://www.dellvistaupgrade.com/contactus.aspx I first call the number on the list

1-866-634-7426.  I was told to check if my PC service tag was  registered.  I new it was since I have showing on the dell website. 

18006249897.  I called customer care and they looked into my system and looked my order number and then I got transfered to tech support about upgrading.  I told the issue and he thought that I was buying the new OS. after a few repetitions, he told to contact the number below. 

I was told to tell them that I need to “redeem” which I thought I have been telling themd.

18006249897 option 1 7266966  this number gets on a queue and then drops you.

 what a piece of work.  I wonder how many other folks are having this problem

with 2 gb memory starting to get common on some high end system.  I was trying to find what the maximum paging file size.  our old entry we use was 2 x ram memory.  I found out that the maximum size for windows xp is 4GB per paging file with a total of 16 paging files.

http://support.microsoft.com/kb/254649 

A good primer for virtual memory in windows XP is located on this website 

http://aumha.org/win5/a/xpvm.php

 a more complete thought process on virtual memory

http://www.petri.co.il/pagefile_optimization.htm

http://johnhaller.com/jh/mozilla/firefox%5Finternet%5Fexplorer/

here are the tricks to make firefox work. great for client use