hmm...that would be a little bit harder if you need a truck and might have to use some of the moving companies that are mentioned elsewhere in the forum. usually these moving companies will bring boxes and pack the items for you which is why it may be considered rather pricey for some. if you pick up a free edition of hk magazine, they list quite a few moving companies that handle enquiries in english. my guesstimate for a flat would be 1.5k.
if you have cantonese speaking friends, they should be able to find one of those 'truck for rent' companies but you would need to do all the lifting yourself.
try this company for a free quote
http://www.bugx2.com