Just to let anyone who may be having the same problems as me know there seems to be a few small errors in the Dev C++ tutorial.
In the ->createDevice line there should be an E in front of DT_SOFTWARE (ie. EDT_SOFTWARE)
and this line:
irrGUIEnv->addStaticText( L"Hello World! This is the Irrlicht software engine!", true, rect<int>(10,10,200,30));
should be replaced with:
irrGUIEnv->addStaticText(L"Hello World! This is the Irrlicht software engine!", rect<int>(10,10,200,30), true, true, 0,-1);
This is what made the tutorial compile for me anyways.....