Dont worry too much. Although ASP.NET can be a pain in the butt sometimes its quite easy. I was able to easily create an online shopping cart in ASP.NET (using Access but DB prog doesn't make a big difference besides the obvious being the correct driver) within 3 weeks and I was a n00b. Of course, it depends upon the complexity of the POS system you plan to run. I'd be happy to help if ya need it. PM if you'd like.