Here is what your robots.txt file should look like;

# Robots.txt file created by http://www.webtoolcentral.com
# For domain: http://www.anxietyangels.org.uk

# All robots will spider the domain
User-agent: *
Disallow: 

# Disallow directory /cgi-bin/
User-agent: *
Disallow: /cgi-bin/

# Disallow directory /downloads/
User-agent: *
Disallow: /downloads/

# Disallow directory /forum/admin/
User-agent: *
Disallow: /forum/admin/