Server for protein structure prediction for multiple sequences
Unfortunately it is impossible to predict the tertiary structure of proteins using raw amino acid sequence. The information required to be computed in the construction of the dynamic protein shape is too large for any computer at the moment. 

There are actually a list of research facilities that are looking for people to donate their computer's idle CPU time to help sequence proteins. 

Here is a list: (http://www.hyper.net/dc-howto.html).