step # 1
centos 5.5 is 5 versions out of date and has been UNSUPPORTED sense April of 2011
it is missing the last 3 YEARS!!!! of security updates !
--- DO NOT USE IT !!!!---
if you MUST use the older CentOS 5 for legacy software or hardware install the CURRENT for the legacy CentOS 5
install the CURRENT version
also be aware that cent dose NOT support all "notebook" hardware
and try to install the driver the video
laptops have a built in chip
the intel " chip" is AUTO supported by the kernel
but 5.5 is so OLD it might not
5.5 had the 2d "nv" driver installed by default for nvidia
and had a OLD!!!!! version for the ATI chip
WHAT are you trying to install ??????
again 5.5 is very OLD
there was very little wireless support
and the wired network was a manual set up
or obtained from dhcp
--- NO DRIVER was ever needed for the network
only for the very under supported wireless in the old 5.5
what is this wireless and what are you trying to install ?