Wisconsin has a website that has a self-help section for divorce and legal separation.  It is www.wicourts.gov  It is intended as a guide to the filling out and filing of forms, and also lets you know if you need a lawyer.  However, if you have a legally valid and binding separation agreement in Virginia you do not necessarily need to do another in Wisconsin.  I am leery of any online agreements especially if there are children or assets involved.  You may want to see an attorney when you get back as to this matter.  Be safe.