About Admission for fall 2006 (MS in USA)

Hi ,

Im vinay.
I’m planning to give the GRE test in the mid of December (i.e. btw 19th to 26th of DEC 2005)

My queries are

Am I eligible to take admission for the next fall (August 2006)?
How many month before (AUG-06) should I have the scorecard?

Shall I give the TOEFL exam in the First week of Jan 06?

Whether i have to apply the Universities through post or i can apply electronically?