I am trying to install a driver for my Aureal Vortex 2 soundcard under RedHat Linux 7.2. When I try to do so I get the following error messages (see below). I have tried changing the '-I/usr/src/linux/include' to '-I/lib/modules/$(uname -r)/build/include' using gedit but I get the same error messages :-/ (I copy it exactly as stated).

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[Robert@localhost Robert]$ cd /home/Robert

[Robert@localhost Robert]$ ls

au88xx-1.1.2.tar.gz aureal

[Robert@localhost Robert]$ cd /home/Robert/aureal

[Robert@localhost aureal]$ make install

cc -D__KERNEL__ -DMODULE -DAU8830 -mpentium -O6 -fomit-frame-pointer -Wall -pipe -I/usr/src/linux/include -c -o au_audio.o au_audio.c

In file included from au_vortex.h:55,

from au_audio.c:49:

/usr/include/linux/modversions.h:1:2: #error Modules should never use kernel-headers system headers,

/usr/include/linux/modversions.h:2:2: #error but rather headers from an appropriate kernel-source package.

/usr/include/linux/modversions.h:3:2: #error Change -I/usr/src/linux/include (or similar) to

/usr/include/linux/modversions.h:4:2: #error -I/lib/modules/$(uname -r)/build/include

/usr/include/linux/modversions.h:5:2: #error to build against the currently-running kernel.

make: *** [au_audio.o] Error 1

[Robert@localhost aureal]$

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I'm new to Linux (obviously!) so any help will be greatfully accepted.
Though please explain anything you think might help in simple to understand steps!!!!!!!!

ps The puter is set up under a dual boot system with Windoze 98, the soundcard works fine under this O/S.