Modeling Question

k, i was told that to remove parts on original models, i hab to shrink it or so. If i shrink it, the poly count will be the same and the damn file will be heavy (in size). So how to i reduce polycount and file size of a model without losing it's animations? Oh yes and i've seen other models that did this

You cannot add vertices and keep animations but you can remove and keep them. You can do this with Nicoli_S importer/exporter. Look for it in the tools forum and follow the instructions and it should work.