What kind of work/employment pass can I get?

I recently moved to JB from America.  I work for an American company and travel extensively throughout Asia for my work.  I have a work colleague also living in JB but he is a PR and married to a Singaporian woman.  In other words, I am not employed by a Malaysian company.  I need to open a bank account but need some kind of work or employment pass.  What do you suggest I  apply for and what do I need from my company.  Will a letter from my company be sufficient to open a bank account?

You will need some sort of Malaysian immigration permit to open a bank account, as you are basically a tourist without one. Unless your US company incorporated a local branch or rep. office, you cannot get an employment pass here. EPs are linked to a company not an individual and applied for by the company.