Planar Champion Help

[War_Brute]

My DM has kind of pigeon holed me into being a planar champion after starting fighter...(for story purposes) and while I like what the planar champion does for the most part our DM tends to be a bit blood thirsty to our party, example- we are lvl 7 fighting an adult white dragon that is being commanded by a frost giant god. So I have 6 lvls fighter and 1 planar champion is there any way I can make this character a bit better for combat purposes. Please help I'm still pretty new to D&D.

[MrSandman]

I imagine this is D&D 3.5? You'll probably find better help if you post in the appropriate subforum.