Wireless Entry System I Am Wondering About This Computer...ehm, Set-up? For A Entry-level Gamer (will It Be Cheaper To Build?)?

I am wondering about this computer...ehm, set-up? For a entry-level gamer (will it be cheaper to build?)? - wireless entry system

Hey, I wonder whether this is a good team for an entry-level player, and what you should downgrade-upgrade etc, etc.
AMD Athlon ™ 64 X2 Dual-Core 5000 +
Windows Vista ® Home Premium
SE198WFP Monitor 19-inch Widescreen Flat Panel Monitor
Memory 2GB Dual Channel DDR2 SDRAM at 667MHz, 2 DIMM
HDD 250 GB Serial ATA hard drive (7,200 RPM) w / DataBurst Cache ™
Optical drive 16x DVD + /-RW Drive
Video Card 256MB NVIDIA GeForce 8600GT DDR3
Audio Integrated Sound Blaster ® Audigy ™ HD Software Edition
KEYBOARD AND MOUSE Dell USB keyboard and USB optical mouse
FLOPPY & Media Reader No Floppy Drive Included
MODEM & WIRELESS 56K PCI Data Fax Modem
My Software & Accessories
Dell A225 2.0 Speakers
Anti-Virus (Software No Subscription Only 30-day protection)
Office Software Microsoft Work 8 DOES NOT INCLUDE MS WORD
Sorry if it's dirty.