Laptop Upgrade to Vista

Now that things have smoothed out on my Vista upgrade, I decided to try my own advice in regards to my laptop. Recall, I recommended to forgoe the upgrade and perform a fresh install. So about an hour an a half later, not only was Vista installed, but on a laptop that is officially not supported by HP for Vista. All the major components worked: video, sound, & wireless. I just had to adjust to the correct resolution and ask Vista to find a driver for my memory card slots (yes I just to told it to find one on the internet and it automatically downloaded what it needed). This install was quite easy and for a laptop with only 512MB of RAM I am impressed. I am still planning on a memory upgrade since I have not given it a real workout yet. Still I have so many questions to answer: How well does Vista play in a network environment? What security features are going to conflict with daly business tasks? How many components of the existing networks will need to be upgraded before Vista can take advantage of shared printers from XP, or network aware anti-virus? Boy did I open a can of worms!