Internet Explorer 7 on Windows

1. Click the "Tools" menu
2. Click "Internet Options"
3. Select the "Privacy" tab
4. Click "Advanced"
5. Select "Override automatic cookie handling"
6. Select the "Accept" button under "Third-party Cookies" and click "OK"

Firefox 3 on Windows

1. Click the "Tools" menu
2. Click "Options..."
3. Select the "Privacy" menu
4. Make sure "Keep until" is set to "they expire"
5. Make sure "Accept third-party cookies" is checked

Safari on Apple OS X:

1. Click the "Safari" menu
2. Click "Preferences..."
3. Click the "Security" menu
4. For "Accept cookies" select "Always"

Firefox 3 on Apple OS X:

1. Click the "Firefox" menu
2. Click Preferences...
3. Click the Privacy menu
4. Make sure "Keep until" is set to "they expire"
5. Make sure "Accept third-party cookies" is checked 

Google Chrome on Windows

1. Select the Wrench (spanner) icon at the top right
2. Select "Options"
3. Select the "Under the Hood" tab
4. Select "Allow all cookies" under "Cookie Settings" and click "Close"

Internet Explorer 6 on Windows

1. Click the "Tools" menu
2. Click "Internet Options"
3. Select the "Privacy" tab
4. Move the settings slider to "Low" or "Accept all cookies"
5. Click "OK"

Opera 9 on Windows

1. Click the "Tools" menu
2. Click "Preferences..."
3. Click the "Advanced" tab
4. Select "Cookies" on the left list
5. Make sure "Accept cookies" is selected and uncheck "Delete new cookies when exiting Opera"
6. Click "OK"