Computer Checks are generally operated using certain dedicated accounting software. To write the check you just need to follow some simple steps. For the first step, you have to click the option “Cash Flow ” on the menu bar of the software. After clicking on “Cash Flow” you will find a list of new options, among them you will come to notice a new option named “Write Checks”, just click on it. Following the click, a new window named “Write Check” will pop up. The “Write Check” window can also be accessed using an alternative option. This can be done by clicking on the “Check” button present on the toolbar of the accounting software. In some software, the name of these options may vary. If you find any problem while executing these steps you can search the internet for an appropriate solution. You can also contact the customer service number provided by the software company or the check printing site.