InfoPath and SharePoint are a great combination. Scot Hillier has a good short article on the Office Professional Developer Portal. Here is the summary:
In the manufacturing vertical, companies follow a well-defined process to bring new products to market. This process typically involves an ideation phase where new product ideas are conceived and then fleshed out into prototypes. In this article, I'll use an InfoPath form and Windows SharePoint Services to capture new product ideas, route them for review, and then assign a team to begin working on them.
Read the article here.