To add a logo for the header of your printouts go to Accounts/Manage Account and find the Company Logo upload box.
SIZE: it is best to not exceed 150 pixels high and 780 pixels wide if you want an exact reproduction of the logo. If the logo is higher than 150 pixels it will be sized down to and the length will also adjust accordingly.
FILE TYPE: the best file type for a logo is a png file. As well, jpeg, bmp will work. A pdf file will not work.
1) No picture, just your company name: create an image file and put your company name in text in the image.
2) A logo image AND your company name: create an image file and put the logo where you want it to be on it, and your company name as text in the image.
3) A logo and NO company name: create an image file of your logo. As long as it's between 150 pixels high and 780 pixels wide you don't need to put it on a rectangle background- unless you want to place the logo image off center. This example has the image in the center.