Press ENTER during game play, then activate the following cheats by entering the corresponding codes and pressing ENTER:

CHEAT FUNCTION - CHEAT CODE
Mana and gold set to 9999 - moneyfornothing
Reset party movement points to full - borntorun
Heal entire party - help!
Win mission - wearethechampions
Lose mission - loser
Full map - herecomesthesun
Hide map - paintitblack
Allow buildings in the capital again - anotherbrickinthewall
Peace with all countries - givepeaceachance
War with all countries - badtothebone
Alliance with all countries - cometogether
All party members almost at next experience level - jump
All party members level up - stairwaytoheaven
Revive fallen units - lifeisacarnival
Know units within enemy cities and generals - allalongthewatchtower
AI does not notice you - invisibletouch
Advance to a day - letsdothetimewarpagain