PowerGrips are the greatest invention since sliced bread and peanut butter.

They might be compatible with your old pedals, or you can buy the PowerGrip pedals and straps as a package, or the pedals I currently like are Dimension PD1086.
http://www.dimensionbikeproducts.com....priceless.pdf
page 20
But these straps are compatible with a lot of other pedals.