Try using Patccomoi's build, except lose the stance for Rebirth.
Tyrian only Monk can have a good healing build, because anyone who has ever played Prophecies before any other campaign came out, will attest that a healing monk can do very well with the skills at hand. Word of Healing is better than Shield of Regeneration.
Perhaps not a straight heal build, but thats not stopping you from being a "good" Monk.
1. Reversal of Fortune
2. Signet of Devotion
3. Shielding Hands
4. Aegis
5. Shield of Deflection
6. Glyph of Lesser Energy
7. Mend Ailment
8. Holy Veil
Thats an example Prot build, using only skills found in Prophecies / Core Skills. If you ever PvP you could (This is assuming its possible to do so) unlock skills from other campaigns and use Monk Tomes to unlock the skills for your characters. I don't know if thats possible, but if it is then it would make you more versatile.