Custom calendar ... but with DATA, doggone it!

[metasilk]

I want to import or merge an .ics file (or several) into a calendar layout I design. In what program should I build this layout? Please comment!

(I can design / layout in a zillion programs. But the key is the software should be able to bring in an .ics file and put that data in the right places. THAT I have not been able to find / figure out)