Here are some links... I think you'll have to copy and paste them in your browser - they may not work the way I've posted them... These are links to the ex-pens and soft-sided crates. You can get them from pretty well any store that sells pet supplies - or just do a search online.
Oscar has an ex-pen set up at home and one at my work and he has plenty of room to 'do his thing'. They're also good because you can put them outside if you want.
http://www.callingalldogs.com/index....TS&Category=70 http://www.mightypets.com/General-Ca...cise-Pens.html
Hope this helps.. lots of alternatives out there, but the ex-pen works great for me.