Looking for drivers for an Inspiron 3647 for Win7 64bit

I've been asked to downgrade an Inspiron 3647 to Win7 64bit. The install went OK (thanks to the Unofficial Dell Win Reinstallation guide), but I'm missing a few drivers. Here are the hardware IDs. Can anyone point me to the right downloads?

Thanks in advance!

ethernet controller
PCI\VEN_10EC&DEV_8168&SUBSYS_06111028&REV_0C
PCI\VEN_10EC&DEV_8168&SUBSYS_06111028
PCI\VEN_10EC&DEV_8168&CC_020000
PCI\VEN_10EC&DEV_8168&CC_0200

Network Controller
PCI\VEN_168C&DEV_0036&SUBSYS_020C1028&REV_01
PCI\VEN_168C&DEV_0036&SUBSYS_020C1028
PCI\VEN_168C&DEV_0036&CC_028000
PCI\VEN_168C&DEV_0036&CC_0280

PCI Simple Communications Controller
PCI\VEN_8086&DEV_8C3A&SUBSYS_06111028&REV_04
PCI\VEN_8086&DEV_8C3A&SUBSYS_06111028
PCI\VEN_8086&DEV_8C3A&CC_078000
PCI\VEN_8086&DEV_8C3A&CC_0780

SM Bus Controller
PCI\VEN_8086&DEV_8C22&SUBSYS_06111028&REV_05
PCI\VEN_8086&DEV_8C22&SUBSYS_06111028
PCI\VEN_8086&DEV_8C22&CC_0C0500
PCI\VEN_8086&DEV_8C22&CC_0C05

Universal Serial Bus (USB) Controller
PCI\VEN_8086&DEV_8C31&SUBSYS_06111028&REV_05
PCI\VEN_8086&DEV_8C31&SUBSYS_06111028
PCI\VEN_8086&DEV_8C31&CC_0C0330
PCI\VEN_8086&DEV_8C31&CC_0C03

High Definition Audio Devices - there was a RealTec update, but it wasn't what i was looking for.
HDAUDIO\FUNC_01&VEN_8086&DEV_2807&SUBSYS_10280611&REV_1000
HDAUDIO\FUNC_01&VEN_8086&DEV_2807&SUBSYS_10280611