missing files on windows startup?

I installed a DSL (At&T) modem and a router on my old win98se system
and now when I am booting up, it gives me four error messages
(demanding a reply) during the startup. It says that these files are
called for in the registry or system.inii, and that they cannot be
found. These are the four files:

vnetsup.vxp
vredir.vxd
dfs.vxd
msnp32.dll

After I reply "OK" to each of the four messages, then it goes ahead
and completes the startup and I can access the internet just fine
(streaming video and all webpages).

I went to "add/remove programs" and didn't see anything I could
uninstall that might help.

Under settings/control panel/network I have the following elements
installed:


Client for Microsoft Networks
Microsoft family logon
Dial-up adapter
Linksys Ether16 LAN Card
TCPIP-dial-up adapter
TCPIP-linksys ether16 Lan Card

It has "Microsoft Family logon" under Primary Network Logon

Under File and Print Sharing, neither box is checked.

Does anyone have any idea how I go about resolving these error
messages on startup? Do I need to hunt for those missing files and
load them myself? Or do I just need to install something from my
win98se CD - or WHAT? I sure hope I don't have to re-install windows
98se because I have a whole lot of cards and applications installed on
this system that is a real headache to go through all over again.
HELP!