[GRASSweb-list]problems with Grass installation

[olivier BONNEFON]

Hello,

thank you for having answered my precedent message., but I still have problems 
with the installation of Grass.
When I try to install grass-5.0.0-1mdk.i586.rpm, a message appears : 
"libpq.so.2 and libgdal.1.1.so are needed."
I can't install postgresql-7.2.2-1mdk.i586.rpm: the program says :
"sfio, libpgsql2 and libpq.so.2 are needed"
What can I do for installing libpq.so.2 ?

Thank you for your help

Olivier BONNEFON