Explorere Browser changes size onscrn

Hello,
I am on an acer aspire and the screen changes size when a 4 headed arrow pops up- yes even when only one finger is on the cursor pad - how might I turn off this feature - it is really annoying and kills the usefulness of the machine.
If you hold a finger on the touchpad and add a fingeryou can cause the issue to appear - bt it then gets a bit random and is rarely called for-I do want to kill it.
Alos there is a silly software scroll wheel that takes over too - I'd love to kill that
Looking for suggestions as to how to do this
D