Applications for VGN-CR3 Series

Realtek RTL8139/810x Family Fast Ethernet NIC Driver
Download
or you may download from realtek site:
Download link
WIRELESS:
Intel ProSet/Wireless
File name: Wireless-Intel.EXE
Download
Download (64-bit)
or try this version
Download
Download (64-bit)

Atheros AR5006X Wireless Network Adapter
Download (32-bit)
Download (64-bit)

BLUETOOTH
Toshiba Bluetooth Stack:
-------------------------
Download
(reported only valid for 30 days, so other user suggest to use Blusoliel 6.0)

or you may try this drivers:
ALPS_BLUETOOTH_DRIVER_6.2_6.2.0.9600.0908210.ZIP
Download
(i never try it yet so try it at your own risk)

Sony Shared Library
SONY_SHARED_LIBRARY_4.1D_081Q_U_4.1.00.12130.ZIP: Download
or
7UPG_SONY_SHARED_LIBRARY_5.4U_5.4.0.05200.ZIP: Download

VAIO Event Service
Download
VAIOControl Center
VAIO_CONTROL_CENTER_2.2U_2.2.00.12180.ZIP : Download
or
VAIO_CONTROL_CENTER_4.0U_4.0.0.07280.ZIP : Download

VAIO Power Management
VAIO_POWER_MANAGEMENT_2.5U_2.5.0.06250.ZIP : Download
or
VAIO_POWER_MANAGEMENT_4.0U_4.0.0.07060.ZIP : Download

For webacam utilities and others:
I found a great post but for other model for sony that may work for you, read here:
http://rotwhiler.wordpress.com/2009/07/26/windows-7-rc-on-sony-vaio-cr231e/