Looks like the fork is bolt on 10mm and the suspension fork has a 20mm through axle, incompatible unless you can get adapters for the front hub, which is most likely not possible with your hubs (really expensive hubs tend to be the only ones convertible)
A rigid fork with a 20mm through axle from the same website is this one.
http://www.ride-this.com/index.php/identiti-rebate-1420-xl-26-fork-20mm-black.html?source=googleps
A rigid fork with a 20mm through axle from the same website is this one.
http://www.ride-this.com/index.php/identiti-rebate-1420-xl-26-fork-20mm-black.html?source=googleps