Make payments online to the Oregon Department of Revenue
(select SS# as ID type and enter the requested information; make sure to choose tax year [correct year] due)
https://revenueonline.dor.oregon.gov/tap/_/
Oregon Business Name Search
(To check on your State of Oregon Business Registration Status or name availability)
http://egov.sos.state.or.us/br/pkg_web_name_srch_inq.login