CPU and xbox360 to LCD monitor

was just wondering how do i connect both of these devices simultaneously to my viewsonic2025m lcd. my cpu is currently using dvi out to my lcd. and i'm using a hdtv-vga cable for the 360 which goes to analog input on my lcd. so i'm wondering how i can switch between the two without having to keep on removing cables n all. i heard of vga boxes which can do this but afraid of losing quality when playing my xbox. i also heard that it is possible to switch from analog-digital-analog using tv tuner software or something?? but not sure about this. could somebody give any ideas??

thanks.