Featured Themes/Plugins don´t load

Hi all,
Just installed wordpress on a 1and1 host.

When I go to add themes or plugins the follow error pops up:

An unexpected error occurred. Something may be wrong with ww.wp.xz.cn or this server’s configuration. If you continue to have problems, please try the support forums.

Obviously nothing is wrong with ww.wp.xz.cn, so it must be my configuration. Ive spent a couple of days reading everything about it, but havent got any success so far (and I dont know much about wordpress, sorry). My guess is that is a problem of permissions on folders.

The issue is that 1and1 dont let me change the permissions on the htaccess file (500 ‘SITE CHMOD 777 .htaccess’: command not understood… same with 775 or 755).

This is how it looks like:

AddType x-mapp-php5 .php
AddHandler x-mapp-php5 .php

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

<FilesMatch “^.*(error_log|wp-config\.php|php.ini|\.[hH][tT][aApP].*)$”>
Order deny,allow
Allow from all
</FilesMatch>

I have written all that up myself, because I think wordpress hasnt got access to write on it, dunno.

I have noticed also that there is no uploads folder under wp-content. I created one with filezilla, but for nothing.

Any help will be kindly and humbly appreaciated.

Thanks in advance