Hi to ping upload.dreamsime.com.
(For Vista)
Go Start-> Search => (Search for "CMD"). A new window will open.
Write "ping upload.dreamstime.com. You will see all Information about Ip and the sendet Packets
I hope it help. a better Idea is start Internet Explorer and go to the Page
ftp://FTP://upload.dreamstime.com. Enter your Dreamstimenummber and your Password. If you can enter the page everything will be fine. If you cant enter dreamstime hade a error on thery server
Another Idea. Befor you can start Uploading you have to activat the FTP unter your dreamstime Managment Area. I check out and dreamstime work nomaly so no Problem
Sorry
I hope I cant help and SORRY for my English