Chipset
ftp://ftp.hp.com/pub/softlib/software5/COL12029/pv-35788-1/sp26573.exe

VGA, Graphic
ftp://ftp.hp.com/pub/softlib/software5/COL11949/pv-35403-1/sp26579.exe

Sound, Audio(from website realtek)
http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=24&PFid=24&Level=4&Conn=3&DownTypeID=3&GetDown=false#High%20Definition%20Audio%20Codecs

(Windows 2000, Windows XP/2003(32/64 bits) Driver only (Executable file), r1.89)

LAN, Network
ftp://ftp.hp.com/pub/softlib/software5/COL11958/pv-35412-1/sp26561.exe

Modem
ftp://ftp.hp.com/pub/softlib/software5/COL11989/pv-35467-1/sp26581.exe

Multimedia Keyboard
ftp://ftp.hp.com/pub/softlib/software5/COL13020/pv-36345-1/sp26583.exe