Sounds like you have everything you need to get the website running. I would take the HTML from dreamweaver web pages and paste it into asp.net web pages. You need ADO.Net to connect the database to the controls on the web page, this is depending on what you have in the DB of course. ADO.Net is built into ASP.Net so you don't need to go our and get anyting else. It is just a subset of database tools for interacting with the databse.
You can run Asp.Net from you computer to make sure the website is hooked to the database correctly and check out the web pages to see that they load properly in the browser.
You sound a bit overwhelmed at the moment. You need to break the task of "putting it all together" down in to small tasks that you need to do to get it out there.
My advice:
1) Spend more time with ASP.Net, create really simple web pages and understand how it works and see that it creates web pages in your browser
2) Move the HTML from Dreamweaver into ASP.Net web pages
3) Learn ADO.Net so you can to "talk" to your databae.
4) Learn how to debug your code and step through the code so you become familar with how it all hangs together.
5) When it all works on your machine, you need to move it to a hosted web server.
Step 5 is the last step and is were the …