Aurora M9700 Update to Win7 64bit

Hi there, This is my old Alienware laptop which has undergone many driver changes and the like over the years. I'd like to upgrade to Windows 7 64bit as I get the idea the processor was built to run at 64 bit frequency. I've heard there are some driver issues but i'm thinking the Vista 64 drivers are backward compatible aren't they? I'm currently running 7 32 bit and I'm hoping to get a performance increase by upgrading. It's very hard to find tech support for this laptop on google so I figured it was time I asked for myself.

So here's what I need help with:
-Will I be able to run Windows 764bit and will I get a performance increase of any kind?
-Are there any good driver resources where I could find everything for my specific model? I've found there's quite a few M9700 laptops with varying processors and network cards. I can dig up more information if someone's willing to help me find specifics. I've posted a bunch of CPUZ information below if its of any use. Thanks in advance!

CPUZ Information:

Spoiler

CPU Processor: AMD Turion 64 ML-34
Code Name: Lancaster
Brand ID: 10
Package: Socket 754
Technology 90 nm Core VID 1,450 V
Specification: AMD Turion(tm) 64 Mobile Technology ML-34
Family:F Model:4 Stepping 2
Ext.Family F Ext.Model 24 Revision SH8-E5
Instructions MMX(+) 3DNow!(+)m SSE(1, 2, 3,), x86-64

Clocks Core Speed 1809.4 Mhz
Multiplier x9.0
Bus Speed 201.1 Mhz
HT Link 804.2 Mhz
Cache
L1 Data 64 Kbytes 2 way
L1 Inst. 64 Kbytes 2 way
Level 2 1024 Bytes 16 Way
Single core processor.

Mainboard
Manufacturer Alienware
Model Aurora m9700 AB040
Chipset NVIDIA nForce4 Rev A3
Southbridge NVIDIA nForce4 MCP Rev A3

BIOS
Brand American Megatrends Inc.
Version W830D315
Date 04/26/2006

Graphic Interface
Version PCI-Express
Link Width x8 Max Supported x16

Memory
DDR
Size 2048 Mbytes Channels# Single

Timings DRAM Frequency 201.0 Mhz
FSB DRAM CPU/9
CAS# Latency (CL) 3.0 Clocks
RAS# to CAS# Delay(tRCD) 4 clocks
RAS# Precharge (tRP) 4 Clocks
Cycle Time (tRAS) 8 Clocks
Bank Cycle Time (tRC) 12 Clocks
Command Rate (CR) 2T
DRAM Idle Timer (16 Clocks)

Graphics
NVIDIA GeForce Go 7900 GS
Code Name G71 Revision A2
Technology 90 nm
Clocks
Core 375 Mhz
Memory 500Mhz

Memory Size 256MBytes, Bus width 256 Bits