Not sure what you mean by 'bigger.' If you want to add more icons to the top left, open the program then drag it's icon from the recently opened list. If you want your recently opened list longer, right click on your taskbar> properties> 'start menu' tab> 'customize' button. Under the 'general' tab you can select large/small icons and increase the number of recently opened programs listing there.
EP, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS