Hi again Carlos,
VSD does actually output html, so if eBay lets you upload your own store front using your own html, then you can use your VSD designed header easily.
First, locate the directory where the VSD creation is saved
Then, ignore the .vnu file and open the associated directory
In there is the html files and a folder called "Files" which contains images etc.
You can now upload all to your normal host or to S-Drive and then open the html file and edit the <img src="files/img.png"> tags to be "http://www.yourhost.com/files/img.png" (img.png is an example, but obviously in your case it will be a different filename with .jpg, .gif or .png etc.).
When you are done editing all the images to be called directly from your server, use select all ( CTRL-A) to copy the entire html and then paste it into your eBay custom html area (CTRL-V).
Now, when you update this / save this on eBay it should result in what you designed in VSD becoming your eBay store home header
Dave