Hello narawood,
Firstly, a very warm welcome to WPF. Secondly, I think a lot will depend on where you place the lamps relative to your subject. 300W halogen lamps are going to be very bright, harsh sources if you don't place them sympathetically.
Assuming you are shooting digital, it will cost you nothing to experiment. Take along a couple of family members and get them to pose whilst you adjust your setup and examine the results. Depending of how far away you place the lamps, and the height/angle they are at, you may find that some form of diffuser may be required.
Try taking a look at the "Flash Technique" sub forum
http://www.worldphotographyforum.com...splay.php?f=28
I know you are not using flash, but the same basic techniques will apply regarding elimination of shadows and ensuring sympathetic lighting. You are far better off trying to get the lighting right when you take the picture rather than trying to adjust the results in photoshop later.
Hope this helps.
Duncan