Can you list what you've tried?
Windows 7
My first port of call would be display settings: Control Panel -> Settings -> Display -> Screen Resolution - set the the touchscreen monitor you wish to use as your Primary display.
Unfortunately in Windows 7 in a dual monitor setup, from experience, your touch screen will have to be the Primary display.
Windows 8; if you have both a touchscreen and non-touchscreen monitor connected to your PC, you might need to change settings for your cursor.
Swipe in from the right edge of the screen, tap Search (or if you're using a mouse, point to the upper-right corner of the screen, move the mouse pointer down, and then click Search), enter Tablet PC Settings, and then tap or click Tablet PC Settings.
Tap or click Setup. Administrator permission required You might be asked for an admin password or to confirm your choice.
If you’re given a choice, tap or click Touch Input, and follow the on-screen instructions.
Hope this helps :)
Best Answer
If you mean do the touch screen features still work on the other machine, the answer is yes.
Past that, you can even see some of the touch screen features on a non touch screen monitor (just not the multi touch features!) For example, on the taskbar, click (without releasing) on any icon and then drag the mouse up, and you will see that it does the same as using your finger and dragging up.