How can I connect 2 ISPs to 1 computer

I have 2 ISPs(One connect to office intranet and other connect to external braodband) and 1 computer(Windows7). During the day I switch between the two ISPs periodically by plugging and unplugging the cat5e cables (I never use the two ISPs at the same time). I want to simplify this process and save the RJ45 jack on my laptop from wearing out by the repeated plugging and unplugging of the cat5e cables. How can i switch between two ISP without doing this process? or is there any script that can switch between 2 ISP? or is there any hardware through which i can achieve my requirement?