Hello, I have not looked at the links you posted nor have I really been keeping track of all the "talk" about the specifications that is needed to run Vista but this is my simple advice.

My current laptop has an AMD64 3700 CPU, 2gb of RAM, 128 MB dedicated video card and a 100GB hard drive. It has a 17" wide screen, with a resolution of 1680x1050 and an external 17" inch monitor with a rez of 1280x1024.

I say all of that to say this. Yes, I can run the Aereo interface but I still wish that Windows and programs would respond faster. At any one time I run IE (with about 6 tabs open), Outlook, a download program, 2 instant messenger programs, antivirus, firewall, virtual cd program, drive encryption software and Windows Defender. These all run fine with the current specs on my machine.

However, I get a problem where I want to run video on my external monitor, the 128MB card is not enough and the video and audio would not be in sync all the time.

So to try and answer your question, I honestly do not see how a "budget", i.e. a computer with less than 128MB dedicated video and maybe even less than 1.5GB of RAM is going to run Vista properly, assuming you are going to "push a lot of software" at it.

I am looking to buy a second laptop, for portability, and I do not plan on buying anything which does not have at least 256MB of dedicated video memory and at minimum the 1.5GB of RAM. If I can afford more RAM, I definitely will buy more. With respect to processor, you could even get a dual core processor if you can afford it but mine is a simple AMD64 3700 and it runs fine as I have stated already. However for a new laptop I would go dual core also.

So yes you can upgrade Vista but will you experience the full effects (visuals) of Vista on a budget machine, I do not think so but I would have to research the topic more to back up my statement and I doubt I will do that anytime soon.