GCC install

[nikoladsp]

:?:
 Hi,i  have installed Mandrake 10 and some packages( including GCC compiler).After some time i download newer version of GCC(3.4.0) i tried to install in folowing way:
1 unpack src files into /usr/src/GNU 3.4.0
2 cd into /usr/src/GNU 3.4.0
3 ./configure
4 make
5 make install

Everything was fine but when i go into /usr/src/GNU 3.4.0 and type gcc -v it still shows older version.What to do?Do i have to uninstall older version first( but how will i compile than) or erase older version after installing new one.

Please help.
Thanks.