Googlecode svn link asking for authentication user and password plz help!

[potatofeet69]

These svn links I'm trying to download are from snakes website and I have been trying to figure out how to get past this damn authentication window so I can download spacebuild 3.
For a while now I have been researching how to fix this problem, but nothing I can make sense of. I have tried putting in anonsvn for user and pass but the window keeps popping up for authentication. Am I the only person having this problem? If so plz let me know and suggest how I can fix it.