Handheld device image downloading and saving

I have an IPAQ PDA and I want to write a c# code which uses a image file that must be downloaded over internet by giving the url. I tried WebClient Client = new WebClient (); Client.DownloadFile("http://www.xxxx.com/image.jpg", " image.jpg"); but compact framework doesn't cover WebClient class. So how can I achieve it with httpwebrequest class or any other class??? By the way, how can I just directly put it on the screen? without using memory, I mean I dont want it to be written on harddisk. thanks...