Display EXCEL sheet in browser WYSIWYG

I have a highly formatted excel worksheet that i want to display/render in html/asp, i don’t want the excel component to run in the browser. I’ve tried techniques as getting the excel data as an ADO RS, GetString/GetRows functions, etc., but unfortunately due to the formatting of the cells; merged, bordered, shaded, etc, the browser displays a very ugly result (xls sheets with non-formatted cells work fine). I don’t get what i see from my excel sheet.
Any help (with code please, or url links)will be very much appreciated.