Well, sorry to blow some illusions of you 
* 32 bit can use up to 4gb emory well, if you have a non-retarded motherbord. With one of those, the limit is around 3.5gb. That is not a limit if Windows with 3.5gb - it is more how the hardware maps the PCI areas, some hardware realated issue. I havea ton of old servers around here happily using 4gb They did run on 32 bit until nd of last year.
* Even if NT is 32 bit, having a 66bit OS will allow you a lot of reserves. Especially when running some more things, having RAM may speed things up. There is no signifcant advantage of using a 32 bit OS. I run everything 64 bit here, including some machines just having 512mb RAM
I have decided to go AMD some significant time ago and since then I am totally on 64 bit since around octoer or so last year - retired even all 32 bit virtual machines. I will never understand the cra Intel is pulling, likenot supporting virtualization on lower end processors
That said, I am moving towards Windows 7 this weekend, too - will give it a try on my new trading system that I set up beginning of next week.
That said, I possibly spend the next 2 weeks mostly programming an order entry interface for myself... which will use the zen-fire API. Which incidentally is 32 bit. Now, I know how to get out of that (which involves embedding the API into a separate program that iwll run under 32 bit - not nice, but it has some advantages, too, especially when one assumes the other program will start (more often, especially during development) and so the API connection will stay up
* 32 bit can use up to 4gb emory well, if you have a non-retarded motherbord. With one of those, the limit is around 3.5gb. That is not a limit if Windows with 3.5gb - it is more how the hardware maps the PCI areas, some hardware realated issue. I havea ton of old servers around here happily using 4gb
They did run on 32 bit until nd of last year.* Even if NT is 32 bit, having a 66bit OS will allow you a lot of reserves. Especially when running some more things, having RAM may speed things up. There is no signifcant advantage of using a 32 bit OS. I run everything 64 bit here, including some machines just having 512mb RAM
I have decided to go AMD some significant time ago and since then I am totally on 64 bit since around octoer or so last year - retired even all 32 bit virtual machines. I will never understand the cra Intel is pulling, likenot supporting virtualization on lower end processors
That said, I am moving towards Windows 7 this weekend, too - will give it a try on my new trading system that I set up beginning of next week.
That said, I possibly spend the next 2 weeks mostly programming an order entry interface for myself... which will use the zen-fire API. Which incidentally is 32 bit. Now, I know how to get out of that (which involves embedding the API into a separate program that iwll run under 32 bit - not nice, but it has some advantages, too, especially when one assumes the other program will start (more often, especially during development) and so the API connection will stay up
? Or should I just pay up a little and go with X trader with X study ? I scalp YM, very basic charts.