Drivers and hardware detection will require Administrator Rights.

Analog Devices AD1885 Integrated Audio
http://ftp.us.dell.com/audio/R45973.EXE

3Com 3C905C Integrated Network Card
http://ftp.us.dell.com/network/R41703.EXE

Intel Pro/1000 XT 64Bit Gigabit Adapter
http://ftp.us.dell.com/network/R39759.EXE

Speed Step, I tried all those last night.  What I have the yellow exclamation Mark on is:  "PCI Simple Communication Controller".  And on VGA controller

And when I tried to install the Radeon 9600 (Upgraded to that some time ago), it didn't install.

speed Step,

I also tried two Intel chipsets to no avail.  Ineed to install the US Robotic Modem also and i have the CD for that in the attic, that may take care of it as it seems this is from an unknown modem or NIC and the NIC is fine.

Current ATI Drivers Do not support the older Radeon 9XXX series.  

ATI Catalyst™ Legacy Display Driver

http://support.amd.com/us/gpudownload/windows/Legacy/Pages/radeonaiw_vista64.aspx

http://support.amd.com/us/gpudownload/windows/Legacy/Pages/integrated_vista32.aspx

http://support.amd.com/us/gpudownload/windows/Legacy/Pages/radeonaiw_xp64.aspx

http://support.amd.com/us/gpudownload/windows/Legacy/Pages/radeonaiw_xp.aspx

Note: AMD’s DirectX 9 ATI Radeon graphics accelerators are not officially supported under Windows 7.   If the user chooses to, they can install the ATI Catalyst Windows Vista graphics driver under Windows 7.   Please be aware that none of the new Windows 7 graphics driver (WDDM 1.1) features are supported (as the Windows Vista level graphics driver is limited to WDDM 1.0 level support). 

Any customers using a combination of a ATI Radeon™ HD 2000 Series, ATI Radeon™ HD 3000 Series, or ATI Radeon™ HD 4000 Series product with any of the legacy products listed above in a single PC system must use the ATI Catalyst 9.3 or earlier driver.   All future ATI Catalyst™ releases made available past the ATI Catalyst™ 9.3 release will not include support for the legacy products listed above or any of the features associated with those legacy products.

AMD may periodically provide Windows XP and Windows Vista driver updates (for the products listed above) for critical fixes only.  No new features will be provided in future driver updates.  The Linux ATI Catalyst™ driver will only be supported in Linux distributions prior to February 2009 for the legacy products listed above.

I also Recommend the DirectX June 2010 patch.

DirectX End-User Runtimes (June 2010) - Microsoft

The following products have been moved to the legacy software support structure (including Mobile and All-in-Wonder Variants):

ATI Radeon 9500 Series
ATI Radeon 9550 Series
ATI Radeon 9600 Series
ATI Radeon 9700 Series
ATI Radeon 9800 Series
ATI Radeon X300 Series
ATI Radeon X550 Series
ATI Radeon X600 Series
ATI Radeon X700 Series
ATI Radeon X800 Series
ATI Radeon X850 Series
ATI Radeon X1050 Series
ATI Radeon X1300 Series
ATI Radeon X1550 Series
ATI Radeon X1600 Series
ATI Radeon X1650 Series
ATI Radeon X1800 Series
ATI Radeon X1900 Series
ATI Radeon Xpress Series
ATI Radeon X1200 Series
ATI Radeon X1250 Series
ATI Radeon X2100 Series

.

downloaded DirectX End-User Runtimes (June 2010)

and Microsoft .NET Framework 3.5 Service Pack 1

I'll try that and report back.  XP Pro SP3 has no patches past the service pack so this makes sense to try.

speedstep, i found the video card CD and installed the vga, it included .net 2 which was missing from the ATI download.

 I took the modem out to get themodel number and downloaded that, it was what was needed for the "Simple PCI Controller".  LOL

You might try Intel's download site, which has an online chipset identification and update utility. I'm not sure if it will work for something that old.