[Wine] a question about installation winetrics!

[51movie]

Hi, everyone, I have a question about installation winetricks unfixed, could anyone help me?
Thanks!
the problem is, when I install the winetricks, it can be downloaded but 

"length 147,533 (144K) [text/plain]
winetricks: Permission denied

can not write to “winetricks”(Permission denied)
aad at aad-desktop:/$ 
"
Of course, I run at a root user,   :(