ecommerce web design.... help

You should probably find a developer to help you out (personally, not just from forums). Accepting payments needs good security and if you don't know code you won't know how to make the decisions on security. Not trying to rain on your parade, but there's a lot of sites that accept payments that don't have appropriate security in place and are responsible for people having their identities stolen.

 

You are in over your head for what you want to do.

If you are willing to learn coding (not a lot) and manage your own server you can install a shopping cart package, customize it, and set it up to accept secure online payments via PayPal and/or Google checkout. But that will require that you get your hands into some coding, not too hard though. The most popular open source shopping cart software packages are written in html and php, using sql databases, but they do have interfaces for customization so that you don't have to touch much, if any, of the code.

Allwebco is a company with templates that are very nice, and also allow the option of including a shopping cart like what i mentioned above. They will do as little or as much of the work as you need/are willing to pay for. I have not investigated companies who do this so I'm not vouching for their service. (I have just used a few of their templates and have never used their shopping cart services.)

 

http://www.homestead.com/~site/hslo/basicstore/howitworks.ffhtml

This is an ecommerce site (pretty much ready made) but it is some place to get you started. A couple of years ago I used one similar to this (but I can't remember the name of it!! ugh) and it was very simple to set up...and you could also edit it a bit to customize for yourself...