Ya thats true. Visual Studio does slows down a comp with 512 MB RAM on Vista. But then Vista is not the culprit for that. On a system that meets minimum requirement to run Vista, expecting to run an app as heavy as Visual Studio with jet speed will not be right, isn't it buddy? Besides the requirements for Visual Studio do quote higher amount of ram so the situation is justified, i guess. These things are true for any OS i think.
My relative that i was talking about, Apart from his day job, works as a freelance india language translator for Microsoft as well as other companies. So most of his work includes using proprietry tools from companies (ex Microsoft) or the standard Microsoft Word mostly. He also have some educational softwares for his children as well as some games like quake 3 arena, Need for speed hot pursuit 2 etc. All these work fine on his Vista machine. So as per my experience, for this kinda work, the minimum system works great. No offences yaar, ok