Purchasing an Early B-day Gift

I got Disgaea:Hour of Darkness for my PS2. This time,it actually works! I've gone through a few battle tutorials. Hopefully,it'll become second nature. Also,I've played my Castlevania games on the DS for the past few days. In POR,I defeated the Dullahan on Hard mode,but the game is a huge headache in many ways. I'm getting nowhere fast in OOE.