first thing to check is to make sure the forms encoding type is set to multipart/form-data.
In design view, select the first text field. In the tag selector of Dreamweaver, select the form tag. Look in the property inspector for the form tag, and make sure the encoding type dropdown list is set to multipart/form-data.
If you still having a problem:
Double click the Insert Record server behavior, and remove the Redirect after insert.
Then go to the bindings panel, expand the WA Uploaded Files Global Status group and add the debug info binding to the page.
Also add the following at line 1 of the page for troubleshooting:
after testing, post back with the debug info and any errors that may be occurring and a copy of the page in a zip file so we can investigate the problem.