If you want admission in a Japanese university for an undergraduate course (4 years), my best recommendation is this site
Universities, Colleges and Japanese Language Institutes-JASSO
It has lots of information, you can look up specific courses and it gives you details on how/who to contact for admission.
I think that if you just want a course in a standard university (ie, not prestigeous), then you have a lot of options, and usually language isn't such a big problem. Lots of universities organise Japanese classes for international students.