F Visa

I am a F-1 student from India. I was declared out of status by the college as I dropped below 12 credit hours this semester. I had a sprain in my ankle, but i did not visited any doctor for such small thing, and as a result i don't have any medical proof to back my story in reinstatement. I am confused weather this reason (ankle sprain) will be sufficient for my reinstatement application to be accepted, or weather i should try re-entry with a new I-20; and if re-entry is a better option, from which country? (my home country(India) or any other country such as Canada, or Mexico).

I am currently a PhD student and preparing for application for OPT. Previously in 2004 upon earning BS degree, I got OPT and worked for a summer. In preparation for a new OPT, I realized that I need to provide copy of front and back of the previous EAD card. However, I cannot find the card. I just found copy of I-765, I-94, and I-20 for the previous OPT.If I submit without copy of the previous EAD card, will I be likely to be denied for the new OPT?
Also, what is the safest way to deal with this situation.

I have student visa and want to come to the US earlier than that 30 days allowed period of time.Probably one month earlier.Can I enter on visa waiver and before school starts re-enter the US by going to mexico or canada to activate the student visa? (which i was told i need to do).if i do so,do i need to buy one way or round trip ticket since i do not need to go nack to europe to re enter the US and how do i explain it to the immigration officer that i only have one way ticket? a while ago i learned i need to obtain change of classification and fill form I539 which takes months.is that so?

Which visa is easy to apply. Is it business visa or H-1 visa?

I have a Bachelors degree and a Masters degree from the US. My EAD from my masters degree recently expired and the 60 days is almost up. I dont want to go back to school or go back to my home country. If i do find an employer willing to file for a green card based on EB2, will have to go back to school to maintain my status while the green card is in process or will my status change once the paper work is turned in?

I entered USA on F1 visa with my married name. As i got divorced a week before flying to USA wasn't able to change the last name. Now i am graduating soon and wish to obtain certificate in my maiden name. So i got my last name changed in passport from Indian Consulate San Francisco. But in my new passport there is no visa. So what should i do? The consulate and my school says that whenever i go back home i need to get a new visa. So is that true? Will there be any problem in going back India for summer vacation and getting a visa again? Is it possible to get visa here?

I got F1 in Jan 2009. Got H1b approval in May 2009. H1b approval means just got I797B form. I preferred to join Fall 2009 semester in University and came in USA in Jul 2009, got I94 with F1 and continued to fulfill F1 obligations.Now I want to change my status from f1 to H1b, and its seems my employer needs to file a petition with form I-129, will that means it should be applied April 2010 and all the balloting process and I will be able to start work after 1st Oct 2010. Will my existing unused H1b approval be able to be used and to exempt cap and and all things required? And can I get I797