The 2 GB is most likely the virtual memory that a default Windows userland process can see (unless you shift the username/kernel barrier), not physical memory.
i'm pretty sure it isn't the Virtual Mem cuz look.. (posting stats from MIRC script)
Memory Usage: (Usage: 0/2048MB (0.00%)) Â¤ (----------) Â¤ Virtual Memory: (Usage: 53/2048MB (2.6%)) Â¤ (----------) Â¤ Page File: (Usage: 0/0MB (0%)) Â¤ (----------)
and when i use task manager to see how much i'm using its currently at 336MB. Total Physical Memory 3144112K