Well i'm pretty new with vB and i edited some templates , but now i got these horizontal lines between all of my categorie breaks , i don't like them..
Installing the categoty seperater? Well those lines could be two things either empty tables(which I am sure they are) or <hr>. If you cannot find them in the code. I would revert it to original and try it again.
No problem. When something happens like that if you can't figure out whats wrong always try reinstalling. Sometimes by accident you might take out to much or not take out enough.