[MiKTeX] Problems with yap

[<gui...@ya...>]

I've just installes MikTeX 2.2, and when i tried to
see a .dvi file with yap, it has begun loading
something, then it told me (in an OKBox): Not all
fonts could be loaded. See 'File->Document
Properties', for details.
Then, in yap's window, i looked in File->Doc.., and,
in a box, there were 
cmr10>>Not loadable
cmr8>>Not loadable
and other times other things like these.
I tried to reinstall MicTeX, but nothing happened.
Do you know what i can do to solve the problem?
Please, help me!
Thank you all,
Guido Gigante

______________________________________________________________________
Mio Yahoo!: personalizza Yahoo! come piace a te 
http://it.yahoo.com/mail_it/foot/?http://it.my.yahoo.com/