500 Internal Server error please help

hello all friends plz helpme i was just updating theme of my website vugoogle.com and i got this error
500 Internal Server error


now my website is also not getting opened what to do plz help

# -FrontPage-

IndexIgnore .htaccess */.??* *~ *# */HEADER* */README* */_vti*

<Limit GET POST>
order deny,allow
deny from all
allow from all
</Limit>
<Limit PUT DELETE>
order deny,allow
deny from all
</Limit>
AuthName vugoogle.com
AuthUserFile /home/vugoogle/public_html/_vti_pvt/service.pwd
AuthGroupFile /home/vugoogle/public_html/_vti_pvt/service.grp
my htacces file is like that help me

Hello,

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