Driver doesn't load at bootup

[grc]

At system bootup time,
XP Event Log reports:

Event Type: Error
Event Source: Workstation
Description:
Could not load MRxSmb device driver.

This is followed by:
Could not load RDR device driver.

How do I repair this situation?
Are there updated driver versions?
Might they be corrupted? If so how
do I fix them?
Thanx for any help.