The advance one frame buttons are called step back/forward and are the buttons either side of the play button below the monitor window.

I have now discovered that I can move the CTI with the mouse wheel by holding the mouse pointer over one of the step Back/forward buttons and then roll the wheel. I find it very handy for quickly locating a point for a cut.

I now find that when I open the program I am able to move the CTI one frame with each roll of the wheel but if I zoom in or out the timeline it then results in the CTI stepping 7 frames with each roll of the wheel.  If I minimize and then maximize again the wheel again reverts to a one frame step with each roll of the wheel. Any clues please?.

I have just taken delivery of Steve Grisetti's book "Photoshop and Premiere Elements 10 " ( I am in Australia)  and have carried out the recommended steps to "Optimize Vista and Windows 7 for best performance" in the hope that this might solve the problem but alas no change.  I have tried several mice/mouses, wireless,corded,USB,mouse port but no joy there either.

  I have now established that it is only after I minimise the  program and then maximise it that the CTI moves one frame per wheel roll, this continues until I perform any action and then it jumps 7 frames per wheel roll however if I use the left/right keyboard keys the CTI moves one frame like the step/forward back buttons in the program. 

  As I have become accustomed to rolling the wheel and find this the most efficient method of moving the CTI I am keen to restore this function. At this point I am unsure whether it is a quirk of the program or something peculiar to my computer and I would be interested to hear from other users , perhaps "nealeh" , on what happens when they roll the mouse wheel to move the CTI.

Thanks for the information Neale.  I am now convinced that it is quirk/fault of the program.  I have tried many mouse/mouses/mice and get the same result with them all. My usual mouse is a logitech M215 wireless one with a step type wheel like yours.

I have used Premiere Elements versions 2,4 and 7 previously and have become very accustomed to scrubbing the CTI to the approximate point and then rolling the wheel to precisely locate the cut point so I am dissapointed to find that this no longer works in version 10.

I will try notifying Adobe of this condition in the hope that they give it consideration in either an update or the inevitable version 11.  Meanwhile I will have to get used to clicking the step forward/back buttons or using the keyboard.

Many thanks.