If your company agrees to sponsor you, some Universities may require company to issue the official sponsorship documents for you to get I-20. I don't know about your case.
And visa officer also need you to show this.
I used to be doing a visa-consulting business with my cousin brother in 2004 and 2005. My partner left Singapore last year, so I did continue in 2006. What the information I provide to you is based on what we did in 2004, 2005, as well as my personal experience with US visa. I hope there's no change in 2006.
You can give me a call at 93826461, feel free to ask questions (no charges). Don't worry.
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