HP pavilion A6314F

Nvidia Chipset,install first and reboot:

http://www.nvidia.com/object/nforce_nf4_winxp32_8.26_11.09.html

Nvidia Graphics driver:

http://www.nvidia.com/object/winxp_169.21_whql.html

Realtek HD Audio:

http://www.realtek.com.tw/downloads/downloadsCheck.aspx?Langid=1&PFid=24&Level=4&Conn=3&DownTypeID=3

On many models,the Vista driver for Conexant modem works in XP:

ftp://ftp.hp.com/pub/softlib/software9/COL21470/pv-56348-1/sp37172.exe

------------
If you decide on dual booting,this may come in handy.Use VistaBootPro to restore dual-boot after XP Install.Look at the last section on this page "Create a Vista Dual Boot Menu"

http://www.pronetworks.org/forum/about88231.html