essential: trustworthy, experience working with others and qualifications or shop trained for a number of years (at least 5 Id say)
desirable: good personal hygene, confidence is good as long as its not over confident thats very off putting, someone who hasnt had too many jobs cause they are likely to leave you at a drop of a hat (faithful is the word Im looking for I think), flexible (overtime and all that), good spelling and numeracy skills, able to work well under pressure, someone who can up the speed when you need it and I suppose someone with an artistic flair would also be desireable although people who say that are usually a bit slow I find...............oh and you would definately need to speak at least 5 languages and have a degree in psychology.....hehehe, only joking,

thats what I think anyway, is that what u are looking for?