Hi firstly
shooting macro with your D70 is not like shooting macro with you 5060.
the DOF "depth of Field" on your 5060 at 5.6 will be much much higher than the DOF on the D70 using a 60mm as you may already know Aperture effects your DOF.
A wider aperture like f5.6 you'll have Less DOF than say a setting of f11 or f16
your primary concern shooting macro is FOCUS, you want your subject to be as tack sharp as you can get it. If you choose an aperture that is reducing your DOF you may well find that you subject becomes a little soft depending on where you focused.
to combat slight errors in focusing you could choose much smaller apertures to give you maximum DOF
I personally always use F11 F16 & F22 on my Nikon F80 & will continue to do so using my D70.
As for shutter speed. the i suppose i would have a think about a few factors
1. What i need to capture the subject in the way i wish to capture it
2. what kind of exposure do i require of the background surrounding my subject
normally however "speaking for myself here" i tend to expose my subjects when shooting macro Totally with Flash, as when using such small aperture settings, to get any kinda background exposure you'd have to have some crazy slow shutter speed.
But creativity is in the mind of the person who holds the shutter button.
Also i'd shoot in MANUAL mode