Device Manager: how to install unknown devices

Hello

i have dell studio XPS 1340, with windows vista 64bit.

In device Manager: some devices have yellow band.

(I had reinstalled the windows but still its there. )

here, is the list:

1) Ricoh MMC Host Controller
IDE ATA/ATAPI controllers [Ricoh Company]
PCI bus 1, device 7, function 2
 Hardware IDs:
PCI\VEN_1180&DEV_0843&SUBSYS_02711028&REV_12
PCI\VEN_1180&DEV_0843&SUBSYS_02711028
PCI\VEN_1180&DEV_0843&CC_088000
PCI\VEN_1180&DEV_0843&CC_0880
 
2) Base system Device
PCI bus 1, device 7, function 3
 Hardware IDs:
PCI\VEN_1180&DEV_0592&SUBSYS_02711028&REV_12
PCI\VEN_1180&DEV_0592&SUBSYS_02711028
PCI\VEN_1180&DEV_0592&CC_088000
PCI\VEN_1180&DEV_0592&CC_0880
 
 
3) Base system Device
PCI bus 1, device 7, function 4

Hardware IDs:
PCI\VEN_1180&DEV_0852&SUBSYS_02711028&REV_12
PCI\VEN_1180&DEV_0852&SUBSYS_02711028
PCI\VEN_1180&DEV_0852&CC_088000
PCI\VEN_1180&DEV_0852&CC_0880
 
4) Network Controller
PCI bus 6, device 0, function 0
 Hardware IDs:
PCI\VEN_168C&DEV_002A&SUBSYS_0200168C&REV_01
PCI\VEN_168C&DEV_002A&SUBSYS_0200168C
PCI\VEN_168C&DEV_002A&CC_028000
PCI\VEN_168C&DEV_002A&CC_0280
 
5) Unknown Device
on PCI bus
 
ACPI\ITE8708
*ITE8708

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Kindly tell which and from where i can install the respective drivers.

Kindly suggest

Thanks