New computer specs...is this good?

[Etats360]

Here's the new computer I am about to order. I currently have a Samsung 20" 204B, and planning on getting a 30" eventually (3007WFP or 305T, which one's better?) for a dual monitor setup. I need this computer to run basic work/school stuff. I also plan on 8-10 tabling on stars, FTP and UB, and using all the accessory programs at the same time(PT holdem, PT omaha, PAHUD, some AHKs)

My Components
PROCESSOR Intel® Core™2 Duo Processor E6550 (4MB L2 Cache,2.33GHz,1333 FSB)

OPERATING SYSTEM Genuine Windows Vista® Home Premium

MONITOR No Monitor

MEMORY 3GB Dual Channel DDR2 SDRAM at 667MHz - 4 DIMMs

HARD DRIVE 320GB Serial ATA Hard Drive (7200RPM) w/DataBurst Cache™

OPTICAL DRIVE 16X DVD+/-RW Drive

VIDEO CARD 256MB NVIDIA GeForce 8600GT-DDR3
SOUND Integrated 7.1 Channel Audio

KEYBOARD & MOUSE Dell USB Keyboard and Dell Optical USB Mouse

FLOPPY & MEDIA READER Dell 19 in 1 Media Card Reader

MODEM & WIRELESS 56K PCI Data Fax Modem

My Software & Accessories
PRINTER Dell AIO 926 - Includes Media Card Reader

SERVICE & SUPPORT 1Yr Ltd. Warranty, 1 yr HW Warranty Support, 1 yr Advance Exchange

DELL 926 PRINTER Dell All-In-One Printer 926
SPEAKERS Dell A525 30 Watt 2.1 Stereo Speakers with Subwoofer edit
ANTI-VIRUS SOFTWARE No Security Subscription (30-day trial) edit
Dell Recommends
Do not leave your PC unprotected! Upgrade to a 36-mo security subscription today.
Upgrade to McAfee SecurityCenter with anti-virus, anti-spyware, firewall, 36-months [add $99 or $3/month1]


OFFICE SOFTWARE Microsoft® Office Home and Student 2007


Is this sufficient? How annoying is Vista for poker? Is this graphics card enough for the aforementioned monitors? This costs $1097 with a coupon, I don't want to spend too much more. Also, is the free AVG anti virus software sufficient protection? Thanks a lot, guys.