You'll struggle.
Presumably you mean 750 watt-seconds which must be a studio head and the flash duration will be longer than 1/1000sec (regardless of what the specs say) so you won't capture the full flash pulse.
You should get most of it though, and while no camera can officially sync at 1/1000sec, some cameras with CCD switching shutters will do it pretty well. Discontinued Canon 1D, Nikon D70/D40 etc, but some people use a Canon G12.
Alternative way is to use an ND filter to get the shutter speed down to a more normal 1/250sec-ish x-sync speed. Depends what you want to do, but high shutter speeds and flash are always uncomfortable bedfellows.