HELP - Links all broken after server move

Just moved from a windows server to a linux and all my links are broken. I have had to turn VBSEO off to get the forum working. Can anyone help. Thanks

I do have an .htaccess the content is shown below. Mod rewrite works as per line 2 of .htaccess My forum resides in www,mysite.co.uk/forum

What is Apache :embarrassed:

RewriteEngine on
RewriteRule testpage\.html http://www.google.com [R]
RewriteBase /forum/
RewriteCond %{HTTP_HOST} .*www.mysite.co.uk
RewriteRule ^/forum/((urllist|sitemap_).*\.(xml|txt)(\.gz)?)$ /forumsvbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 [L]

RewriteCond %{HTTP_HOST} .*www.mysite.co.uk
RewriteCond %{REQUEST_URI} !/forum/(admincp/|modcp/|cron)
RewriteRule ^/forum/((archive/)?(.*\.php(/.*)?)?)$ /forum/vbseo.php [L,QSA]

RewriteCond %{HTTP_HOST} .*www.mysite.co.uk
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !^/forum/(admincp|modcp|clientscript|cpstyles|images)/
RewriteRule ^/forum/(.+)$ /forum/vbseo.php [L,QSA]