Do you have Signlab?
Where did you get the clipart?
Do you have another vector program?
If you have signlab and you don't like working with it then open it in signlab and try "copying and pasting" from one program to another.
If you don't have signlab and you have another vector, then try opening it with that. Did you get the clipart from a reputable dealer? they should be able to let you know how you can open them.
Other then that, you're kinda on your own with that.......