Problems moving edited photos onto a new document.

I am new to Photoshop CS3 extended and i am having problems moving an edited photograph to a new document for printing. I get a screen stating 'The target document has a different depth than the source document. This may result in lower than expected quality. Are you sure you want to proceed' If i say yes nothing happens,

if i try to print from the edited photograph without moving it onto a new document it doesnt fit onto an A4 paper and comes up with 'Specifit print settings (Interpolation, Calibration,Encoding) will be ignored since you are printing to a non post-script printer.

This has just started to become a problem I have not changed printer which is a printer/scanner/copy Lexmark 4550 please help

Sounds like you are trying to make a move a 16bit image into an 8 bit image. besure to convert it before you transfer.