In my school we use software to reinforce literacy skills with our students. I created a schedule to use to ensure that all of my students get the time they need each week to maximize the benefits of the program. I just type in their names for each day, making sure my struggling students go everyday while my tier 1 students get 2-3 days of computer time. I made three versions, depending on how many computers you have in your classroom (one for a 1 computer class, a 2 computer class, and a 3 computer class). Since this is a word document, you can always add more tables if you're lucky enough to have more than 3 computers in your room. You can also change the subject areas to whatever you need them to be.
I attach magnet tape to the back of a page protector and slide this schedule into the page protector. I keep it posted so I can use a vis-a-vis marker to cross names off as they take their turn each day. Then at the end of the week I use a wipey to erase it and start over on Monday. This also helps me track kids who might have missed their turn and need to make it up at some point in the day.