The minimalist approach...
1. AlienBees Beginner Bee Package
. The general consensus is that AlienBees provides the most bang for the buck.
2. A flashmeter is a MUST when using strobes. Many people like the Sekonic L-358
. That particular link includes a radio transmitter... not needed, but for some reason is cheaper than without it. Sekonic is top-of-the-line... you can get by with cheaper.
3. An IR transmitter for the D70 hotshoe. I use the Paterson Interfit IRX
. Use of a transmitter, either IR or radio, means no cables connected to the camera.
I use a D70 and own all 3 recommended items. As mentioned above, you can save by getting a cheaper flashmeter. If the budget is really tight, you can skip #3 and use the D70 built-in flash as a trigger... just be sure to manually set it to its lowest power setting, which is enough to trigger the strobe.
Final note... IR requires line-of-sight. You may have difficulty triggering the strobe if it's placed behind the camera. To eliminate the problem, consider a radio transmitter/receiver combo instead of IR.
Hope that helps.