Windows Vista Memory Specifications

Can someone confirm these details (see table below)? The table is my best guess based on the few details I have been able to pull together across multiple websites. I want to know exactly how much total memory, RAM and Virtual Memory combined is available. I also want to know how much of the Virtual Memory is usable by applications and how much can be used by the OS. What is each individual application limited to? If anyone knows of an online resource that spells out all the details of Windows Vista Memory, both 32-bit and 64-bit versions, let me know.

Windows	32-bit				64-bit
Vista	Physical	Virtual Memory			Physical	Virtual Memory
Edition	RAM	OS	Per App	Total	RAM	Per App	Total
Home Basic	4 GB	2 GB	2 GB	16 TB	8 GB	8 GB	16 TB
Home Premium	4 GB	2 GB	2 GB	16 TB	16 GB	16 GB	512 TB
Ultimate	4 GB	2 GB	2 GB	16 TB	128+GB	128+GB	512 TB
Business	4 GB	2 GB	2 GB	16 TB	128+GB	128+GB	512 TB
Enterprise	4 GB	2 GB	2 GB	16 TB	128+GB	128+GB	512 TB

My Dell E521 is limited to 4GB of RAM, but with a 250GB SATA drive, Windows Vista Home Premium 64-bit would allow me to have 16GB of Virtual Memory which would be a huge benefit while running Netbeans 5.5, Eclipse 3.2.2 and VMware Workstation 6 Beta, heck if it only allows 8GB of Virtual Memory that would still be a huge improvement over my current situation.