I am currently shooting some IR with my Nikon P7000 (that's a Cool Pix bridge camera) and a Hoya Filter. It is tough to get good sharp images. They are never tack sharp. IR focuses to a different plane than visible light.

A couple of points:

1) Don't assume your current DSLR is sensitive to IR. Some are and some arn't. I got all excited when I bought my D7100 and Sigma 10-20 Wide. Shelled out some cash for a big IR filter and guess what, the D7100 as good as it is at everything else SUCKS when it comes to IR sensitivity.

2) Play around with a filter & long exposures if you must. The nicest images are of foliage with green leaves turned white by the reflection of the water in the plants. The slightest breeze moves the foliage during the long exposure giving you blurred images. A converted DSLR shoots/exposes at normal exposure times freezing movement.