I've tried the following:
sudo apt-get remove gcc sudo apt-get install gcc-4.4
But this does not work, running
gcc --version gives a 'No such file or directory' error.
You can install both gcc-4.4 and gcc-4.6 if you wish. The binaries for them would be:
Besides this, if you want
The answer to your question is No
If you wish to use 4.4 for compiling tasks then install it, it's in the repos
The easiest way is to install synaptic, search gcc, g++, cpp.
You can also use the software centre, search gcc-, g++=, cpp= (note that = is not a typo)