Hi lyokocarthage, welcome to the Autodesk Community:)
I'm not sure I completely understand the issue. You downloaded Inventor Professional 2012 from the Education Community and it is working fine, correct? In addition to that you would also like to download Inventor LT?
Thank you for clarifying!
Hi and sorry I'm french and I speak a little English.
you understand my problem.
Hi there! I'm afraid we're a little lost. You may want to post your complete question in French in our French International Community forum. Apologies that we couldn't me more helpful here!