http://www.armchaircp.com/
I've asked them to send me the output of the configure for ImageMagick so I can see if TIFF is in fact there. I'm not sure if there is a more definitive method to test for this, other than by the failure of it. My last host also had trouble telling me if TIFF was supported. They said it was at first, but later said that if it wasn't working then they must not have it installed and I was on my own. LOL.
New host is IX Web Hosting.