I had a similar problem just recently, and even after doing an un-install
then re-install, it would still only offer the network game.
In the end I had to uninstall, manually remove all registry entries for TOCA
2 and then re-install. It is now working fine.
DISCLAIMER - the following is not guaranteed to work, and certainly NOT
guaranteed not to***up your system, so if you choose to do it you do so
entirely at your own risk.
If you want to do this, run RegEdit, search for entries containing 'TOCA'
(assuming you don't have TOCA 1 installed as well that is), and delete them
all.
Good luck.
/\/eil