key commands not working/ mapped to keys not present

I have a netbook (hp mini) and i have found that the view controls are mapped to
1 the middle mouse button
2 the numberpad keys

neither of which i have

How can i remap viewport Zoom/Orbit to say the arrow keys (normal for Zoom and say Crtl+ for Orbit)?

i have tried to do the remap but it seems not to work

I will need this for both the 3d view and the animation mode

I’m also using a notebook, have you tried going to user preferences and checking the Emulate Numpad in the Input tab? Also you can zoom in and out using the + and -keys. Me newbie as well, sorry I don’t know anything about key re-mapping.