Make your sitemap quicky.

You need to download the tool"xenu"
Scan your site with Xenu.
After complete scan.Most of articles in the internet will tell you export the report as sitemap. If you site have thousands of links.The tool will dead when you export the sitemap file.
My way to create the sitemap:
Export the Excel file report.
And then select different options to get the live and great sitemap.There are two options you will need.Stats(select OK) and the Type(html or php etc..) I move the dead links and img files with the options.
Copy the Links with two options and save them into a txt file.
edit the txt file with Dreamweaver.
Add the code:
<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.google.com/schemas/sitemap/0.84">
in the head of the txt file.

Add Code:
</urlset>
in the end of file.

There is a useful function in Dreamweaver we will use.Select edit in the tool>Find and replace
replace http with:
<url>
<loc>http

If your site links are html
replace html with:
html</loc>
</url>

After those step save the txt file as sitemap.xml,you will get your sitemap without 10 minutes.It's the fastest way I found.
Hope this will help you.