Adding Database Fields Dynamically To the Crystal Reports

I have a problem Where in i need to show 24 sizes in one session so i have sliced it to 3 rows 8 columns each , it is not necessary that all the 24 fields should contain data so if there are only 8 sizes i have to show 8 sizes and i have to reduce the size of the section to one row . I am able to suppress the fields in the section but iam unable to reduce the size of the section to one row . so i want to add the fields dynamically to the session instead of drag and drop using ASP.NET(VB) .
Please can any one help me .
Its very very urgent.Could you be using a crosstab? Placing rows and columns i seperate table columns and then printing them in a crosstab.

- Jukka