This is the latest version of Shareaza that should be able to run on your processor. In order to avoid potential problems, you might want to uninstall the previous version first.
Note that installing a second module of 512MB RAM on your PC might significantly boost the performance on the machine.
As for the error inside of
wblind.dll, I'd say this is not something we can change as the file isn't part of Shareaza (AFAIK). So some other (poorly coded) program is making you trouble... You might wish to update it or get rid of it once you found out what program is causing the issue.