To check your print credit from a computer lab, look for the gold coin icon in the notification area on the right side of your task bar. You may need to click on the "Show hidden icons" arrow in order to find it. If you hover your cursor over the gold coin, a speech bubble should appear with your current amount of print credit inside.
At this point, if you need to add more print credit you can do so by right clicking on the gold coin and clicking open. A program will open up which will allow you to deposit more print credit to your account using a credit/debit card.
You can also check your print credit account and add money to it from your own computer through UVLink. To do this, follow the instructions below: