I've  bought XPS M1330 :

• Intel® Core™ 2 Duo Processor T7500 (2.2GHz/800Mhz FSB, 4MB Cache)
• Genuine Windows Vista™ Home Premium Edition
• 3GB Shared Dual Channel DDR2 at 667MHz
• 200GB SATA Hard Drive (7200RPM)

I have 2 questions:

1. Is it possible to have dual boot on this system, i.e. Vista + XP?
2. how can I add to the partitions of the HD?