The windings are 44 ohm and take a max of 0.4A. At 9V they'll take 200mA, far beyond the capabilities of a PP3 9V battery. The motor will work upto 18V supply.
If you use wave-drive you'll power one winding at a time (200mA at 9V, 270mA at 12V), if half-stepping or full-stepping its twice that.
You need a power supply good for those current levels in the first instance.
If you run at lower voltages than 18V you'll get lower winding currents and hence lower torque, note - this may be fine, depends how much torque you want. Note that at 18V it will get HOT. 12V might be more reasonable.
Because the windings are high inductance it won't step really fast, even with high voltage drive - look for motors with low winding resistance/inductance if you want high RPM's - you will then need a PWM bipolar driver like the one you mention (check Polulo.com and others for cheaper options though). This motor isn't going to benefit from a PWM driver though I think.