Depends to what degree you want to reuse the JSP tags...
JSF tags are just a handy set of JSP tags. You're actually writing JSF pages in JSP. So, yes, you can use JSP tags. Just import the appropriate taglib.
As far as using the tag with JSF, that's where it gets tricky. The JSP EL and JSF EL don't play nice together. You'll have to figure out how to hack your way around a lot.
Because of this, I have found that I rarely need JSP tags or even scripts on my page. JSF is quite sufficient to handle almost all the same things as JSP can. You just need to learn how to use the power of backing beans, and JSF tag attributes such as rendered, value, binding, and disabled.
CowKing