mkatona
set up a proper custom WB before your studio shoot, it takes 2 mins. Put up the white card, amke sure the focus area is white (folcus on the card edge first) take the pic, load it as a WB image from the menu, then change the camera to Custom WB using butons on the top. (Full method is in the manual)
Before i did this i had the same red skin, and other color issues . Worthwhile also doing an exposure check a the same time. Flip over you gray card, fire your strobes with you light meter, stick this in the camera then shoot the card up close up so there is no non gray areas, and watch out you dont block your lights while you do it. the histogram should be bang in the middle, if not, adjust exposure until it is. Thats it , since then perfect color, perfect exposure in the studio............just remember to take the camera off Custom WB when you leave!!
The D60 in my experience always underexposes. It not an issue if you shoot raw as you can push it and the detail is there, but that not why I spent £2200 (may 2002) on a camera and its a pain on a lot of images
Andy