PCLinuxOS 2007 and some packages fails to download

I installed this distro, BlitzMax and ran Synaptic to download and install required packages.
GCC 3.3 is installed successfully even though :
- libx11_6-devel
- libmesaglu1-devel
- libalsa2-devel
- libxorg-x11-devel

Anyway to download and install them manually? and from where?

I tried searching for them, found and downloaded some .rpm packages but couldn't install them, when I try to open them with Synaptic I get 'Could not find 'gksu' executable?

Thanks in advance

Well, I figured it out and added more repositories to Synaptic and downloaded/installed the required packages but even though I got this error when try to compile :

/usr/bin/ld: warning: libstdc++.so.6, needed by /usr/lib/libGLU.so, may conflict with libstdc++.so.5
/usr/lib/libGL.so: undefined reference to `drmOpenOnce'
/usr/lib/libGL.so: undefined reference to `drmCloseOnce'
collect2: ld returned 1 exit status
Build Error: Failed to link /root/Desktop/Programming/BlitzMax/samples/firepaint/firepaint.debug
Process complete

Anyone have a clue, please?!

/usr/lib/libGL.so: undefined reference to `drmOpenOnce'
/usr/lib/libGL.so: undefined reference to `drmCloseOnce'

Seems like you're missing at least one package.
Check if you have: libdrm-devel

Thanks markcw, although it was installed, I reinstalled and also added the static one (libdrm-Static-devel) and it now works :)

Nice! libdrm is a dependancy for GL stuff, here's the full list (for Mandriva).

libmesaglu1-devel - Development files for GLU libs
+ libdrm-devel - Development files for libdrm
+ libmesagl1-devel - Development files for Mesa (OpenGL compatible 3D lib)
+ libmesaglu1 - Files for Mesa (GLU libs)
+ libmesaglut3 - Files for Mesa (glut libs)
+ libxdamage-devel - Development files for libxdamage
+ libxext6-devel - Development files for libxext
+ libxfixes3-devel - Development files for libxfixes
+ libxxf86vm-devel - Development files for libxxf86vm