Hi, Charis: thanks for the quick response. You are the man! I would like to help you from whatever the way :-)

As for the ideas, I have another quesiton. Why did you have to create another separate category to generate the PC configurator? Is it possible to use the existing categories? Maybe you just add a column in the product category tables to flag some categories can be PC Configurated? Just a thought, maybe you will have make a lot of codes change if you want to do in this way.

By the way, I found I missed a "Not" in my last post. In the item 5, it should read "5), The currency symbol has to be moved to the right for the NaN error, and the right $ sign does NOT look good on other regular products."