I am new to RedHat Linux; I have in my office computer Win98 with one
hard disk connecting to the local proxy, NT Server and Shared
Printers.

I have installed RedHat 6 on my PC in the same hard disk and managing
to boot the system either Win98 or RedHat by third party boot manager
software.

When I start Win98 they system identifying the Linux partition a D:
drive and giving the normal MS Windows error message to scandisk the
drive, in Windows98 if I click the D:\ drive the system is responding
that the disk is not formatted. How to avoid this?

And… How can I configure my RedHat Linux 6 to connect to my local
proxy, NT and shared printers in the network?

Thanks a lot…

As far as Windows 'seeing' the Linux partition as D:, there is an option in LiLo (type man lilo.conf) to hide certain partitions depending on which OS you choose to boot. It sounds as if you may have a problem with the partition-map (the bit that shows which partitions is of what type).

As far as connecting your Linux box to the rest of the network, you want to read up on SAMBA. As you can see, there's plenty here to be getting on with.