Probably possible assuming that the form is fairly straightforward and doesn't have features designed to prevent auto fill in, such as typing in characters from a gif.
Steps that need coding:
- Open Excel workbook.
- Locate range
- Open IE
- Begin to loop through rows, assuming each row contains one person's details.
- Navigate IE to page, login if necessary
- Fill in form values
- Submit form
- Process next Excel row
As you can see ther are a lot of bits needed, none of which are too complicated but a lot to learn if not used before. Check Google.groups and other posts here for examples of automating Internet Explorer and Excel via script.
Joe (Microsoft MVP - XML