Do I need my COM ID to renew a book?
Yes sir; if I renew the item for you I will need your COM ID in order to access your account. You can; on the otherhand, renew your item if it has not been renewed yet and/or it is not overdue.
The link to renew your material is http://comcat.com.edu/vwebv/login --(or simply click this link) once at the website enter your COM ID, last name and click "Log in" -- click on the "My Account" tab to see all items currently checked out. Click the renew button on items you wish to renew then click on "Request Renewal" and you're done!
I should mention that not all materails are renewable. Reserve material and items that have holds placed on them cannot be renewed.