Be sure that you have java installed on your pc, your firewall and antivirus is turned off unless it wont work
Im using this java and bot is working perfectly

or (mirror)
1. Download this

or (mirror site)
The password is amagad
2. Run WP663f.exe
3. Run ibot which is in that pack ^
4. Enjoy
If you were using 2.x version before
1. Open your hosts file
windows\system32\drivers\etc\hosts
2. Delete profibot line