For I/he/she.......was. For you/we/they........were.

Check the Past Simple of verb "to be": I was, You were, He/She/It was, We were, You were, They were. Ex.: "I was glad to hear you were coming" Sometimes you may find "were" as the subjunctive mood, expressing a wish or something improbable: If I were, if you were, if he/she/it were... Ex: "If I were you, I wouldn't let her go"

Moorche's answer is correct. Using strict rules of English grammar, the conditional is different: If I/he/she/you/we/they were... However in spoken English, you would almost always hear: if I/he/she was... If you/we/they were... If you hear "If I were...", then you know for certain you are speaking to an English teacher. [Ivan83 - I didn't see your contribution until I saved my message. You describe the situation quite well. I'm getting slow in my old age]