Hey Duras, I checked out the Complete Warrior and Complete Divine for you and came up with some PrC possibilities for you.

Complete Warrior:

Cavalier (10 levels) Any Lawful Alignment, BAB +8, Skills: Handle Animal & Know-Nobility/Royalty 4 Ranks each, Ride 6 Ranks. Feats: Spirited Charge, Weapon Focus (Lance), Mounted Combat, and Ride-By Attack. [you may continue to advance as a Paladin]

Exotic Weapon Master (3 levels) BAB +6, Skills: Craft (Weaponsmith) 3 Ranks. Feats: Exotic Weapon Proficiency (any exotic weapon), Weapon Focus (any exotic weapon).

Hunter of the Dead (10 levels) Any non-Evil Alignment, BAB +5, Skills: Know-Religion 5 Ranks, Able to Turn Undead. Special: Had to have a level or ability point drained by an undead creature, even if the loss was offset by magic afterwards. It is the scar of unlife that all Undead Hunters carry.

Justicar (10 levels) Any Lawful Alignment, BAB +6, Skills: Gather Information 5 Ranks, Search 5 Ranks, Survival 5 Ranks. Feats: Skill Focus (Gather Information) [you may continue to advance as a Paladin]

Kensai (10 levels) Any Lawful Alignment, BAB +5, Skills: Concentration 5 Ranks, Diplomacy 5 Ranks, Ride 5 Ranks. Feats: Combat Expertise, Weapon Focus (any weapon). Special: Must complete an oath to either an overlord or an ideal. [you may continue to advance as a Paladin]

Knight of the Chalice (10 levels) Lawful Good Alignment, BAB +8, Skills: Know-The Planes 5 Ranks, Know-Religion 10 Ranks. Spells: Able to cast Divine Spells, including Prot/Evil. [you may continue to advance as a Paladin]

Knight Protector (10 levels) Lawful Neutral or Lawful Good Alignment, BAB +5, Skills: Diplomacy 6 Ranks, Know-Nobility/Royalty 4 Ranks, Ride 6 Ranks. Feats: Heavy Armor Proficiency, Cleave, Great Cleave, Mounted Combat, Power Attack. [you may continue to advance as a Paladin]

Purple Dragon Knight (5 levels) Lawful Good, NG, LN, or N Alignment, BAB +5. Skills: Diplomacy 1 Rank or Intimidate 1 Rank, Listen 2 Ranks, Ride 2 Ranks, Spot 2 Ranks. Feats: Mounted Combat, Negotiator. Special: Membership in the Purple Dragons. [you may continue to advance as a Paladin]

Complete Divine:

Divine Crusader (10 levels) Alignment much match Deities, BAB +7. Skills: Know-Religion 2 Ranks. Feats: Weapon Focus in Deitys Favored Weapon.

Hospitaler (10 levels) Any non-Chaotic Alignment, BAB +5. Skills: Handle Animal 5 Ranks, Ride 5 Ranks. Feats: Mounted Combat, Ride-By Attack. Spells: Able to cast 1st level Divine. [you may continue to advance as a Paladin]

Pious Templar (10 levels) Any Alignment, BAB +5. Skills: Know-Religion 4 Ranks. Feats: True Believer (feat in the CD book), Weapon Focus with Deitys Favored Weapon.

Shining Blade of Heironeous (10 levels) Lawful Good Alignment, BAB +7. Base Save Bonus: Will +3. Skills: Know-Religion 7 Ranks. Spells: Able to cast 1st level Divine. Special: Must have Heironeous as Patron Deity.

Where it says (10 levels) or some other number, it's referring to the number of levels of the PrC that are available. Everything else should pretty much be self-explanitory. I didn't have time to look in any other books. Let me know if you have any questions about any of these PrCs that you may be interested in. ;)

When you have a Hammer, everything starts to look like a nail.
- Some Forgotten Dwarf -