Access Help calculate

[davidof6128]

i Want to make something in access for my job but i dont know how ... I have many years to use this software.

The idea is to have a FORM with many boxes ....

http://img329.imageshack.us/my.php?i...8740895rq8.jpg

when i press product 1 and then product 2 i want to calculate, to give me the sum ....... i ll need to have many products i want to make calculations show i ve create one table from which i want to take the prices ...is it possible or it can be with an other way ??

http://img525.imageshack.us/my.php?i...0673797oy7.jpg

Does anyone have a similar to saw me?

I need ideas !!!!


thanks!!!!