"I" or "me"

[Uregistered]

Hi. I recently looked at the pronouns test in the handouts section. Question number 6 is "My sister and _____ went there."
The answer given on a separate page is "My sister and me went there." Shouldn't this be "My sister and I went there." ? Can both "me" and "I" be used here, or is it definately one or the other?
Thanks for your help!
Rob

[Tdol]

Sorry- human error. It should be 'I' and has duly been amended. Many thanks for pointing it out.