Most people veiw paladins as more of a physical class rather than a magical, paticularly the D&D folks. And when it comes to the arena of equipment, the forces of good are certianly well over the other character schemes. Technicallly Paladins are very much able to arm themselves against the forces ofher Evil. There is in essence a holy spell to counter ever evil one, with the exception of maybe a few. Where the forces of evil have their strength in offence and death, the forces of good have their strength in protection and healing. As a matter of fact Healing spell have the reverse effect on undead, making them even more so tools of the side of justice. I do believe it is the forces of evil that is limited, but I think these might make nice additions to the spell list anyways.
Light ball

Notes: Very nice and basic like fireball, which I presume is very much the intention.
Suggested Price: 60
Hand of Faith

Notes: I'm not see too great a difference between this and light ball. Demolishing is possibly to powerful a word for a non epic holy spell spell.
Suggested Price:
Smite Undead

Notes: Chaos has nothing to do with the undead and even less with evil, after all you can have Chaotic good people just as easily as you can have chaotic evil people. This should deal damage to only undead.
Suggested Price: 100
Radaint Light

Notes: Chaos has nothing to do with the undead and even less with evil, after all you can have Chaotic good people just as easily as you can have cahotic evil people. This spell should only be cast in daylight in conditions where the light isn't mostly blocked, such as a horribly overcast sky. The spell would however peirce through the spell Globe of Darkness. There is also the curious matter of whether those dark heated foes with fire immunity could actually be burned (trys to imagine and evil fire elemental getting burnt)
Suggested Price: 200
If you ever get the time to comment on my own suggestions posted as Master Ace (or the two prestige class that I shall be popping out later) I'd be be quite pleased ^_^ .