Is there a company I can contact that makes a visa run to the Cambodian border by van from Bangkok?  I've seen posts and articles about this type of service from Pattaya but have yet to see a company mentioned that leaves from Bangkok.

I don't know of any companies in Bangkok that do this, but if I needed such services, I would look around the Khao San Rd area.

I need to make a border run to Cambodia by this weekend.  If there are enough interested people (like 4 or more total), we could rent a car and drive to the border saving some time and hassle.