1. Go to Applications > CrossOver > Configuration
2. Identify which bottle is being used as default bottle in crossover. In screenshot below, the default bottle is "newbottle".
3. Go to your CrossOver default bottle folder location. In my case is /home/ak47suk1/.cxoffice/newbottle
4. Because "newbottle" use Windows XP as a basis, I copied two files below which are mfc42.dll and msvcp60.dll from original Windows XP. Avoid to download these two files from untrusted sources on the Internet.
Put these two files in your bottle system and system32 folder. For example:
Shortcut to Ultrasurf
Right-click on the Desktop, Select create launcher.
Insert instructions below to Command text field,
Double-click on the launcher.
Wait for 30 seconds, Ultrasurf will be executed.
Set 127.0.0.1 and port 9666 on Network Settings in Your Firefox. Please refer to Tor tutorial before.