How do i open a .thm file?

What software can i use to open this type of file?
Its a mobile phone theme.
Thanks
Answer #1
A .thm file can be opened and viewed using Windows Picture and Fax viewer. Other graphics programs may also be able to open a .thm file. Alternately renaming the file to have a .jpg extension will allow it to be opened and viewed using most imaging software.
http://www.cryer.co.uk/filetypes/t/thm.htm
Answer #2
thanks, but says no preview available.