Dell Studio 1535 touchpad won't scroll after installing W7

[0080900]

Dell Studio 1535

I've successfully installed Windows 7 on a clients laptop, the thing is the touchpad won't scroll anymore after having installed W7.

I have all the drivers and everything, even the driver for the touchpad.

I just can't figure out to set/configure the touchpad to scroll again.

Note: The touchpad itself does work, but it just won't scroll.

Any help is appreciated.
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[A Guy]

Do you have x86 or x64 Windows 7? You say you have the drivers, confirm that it is these (pick for your correct version)

32 Bit

64 Bit

A Guy