Thank you for your prompt response. I did every step to include my new form "cheque" on Print Server Properties.
Now the new form is listed here, but when I open my document and try to print, this new form "cheque" does not appear. I opened the Printer Properties from the printing window, went to advanced settings on the paper/quality tag, but my form is not here either. I tried to restart my computer and tried again, but I cannot find it.
I have a seven day guaranty, which expires tomorrow. If I cannot make it, I am going to return this printer, Deskjet GT 5820, because printing cheques and other small forms is a priority for my work.