I have maintained a commercial website for about 5 years, learning as I go. I recently decided to totally revamp the site using CSS and was rather excited discovering its power. I am now using HotDog 6 as my development system and Paint Shop Pro 7 for graphics. Having used IE 5 as I ramped up the CSS learning curve, I decided to see how the code behaved in NetScape 4.5 and was greatly disapointed seeing how poorly it behaved.

Any suggestions for an easier way to go or do I need to tediously test everything as I go.