Upload file and set proxy in VB.NET application

Hi Experts,

Assuming I have a very basic form. Have only one textbox, one label and 1 command button. After I type a file and click on the command button, it will upload the file to my webserver (and assume my file name typed correctly) But the problem is I don't know how to upload file to web server in VB. Can someone tell me the command/fucntions and it's parameters?

Also, if I want to set my IE browser's proxy with my applicaiton, how?

Thanks in advance :)

Andy