Cacheing, Minify, ImageMagick with Litespeed

My server uses Litespeed from Litespeed Technologies instead of Apache and not being a server administrator, or knowing anything about servers, I think I may be running into problems.

Firstly I have ImageMagick installed and php reports that it is yet I can't turn it on in the ACP

I have also read that Litespeed doesn't use cacheing or something like that so can Minify CSS still work.

Is there anything I need to know to run XF on a Litespeed server
Thanks Brogan, I did have it installed but I just checked the php info and it is not listed any more, will get the host on to the ImageMagick/Imagick install

Do you know anything about Litespeed and cacheing