Drupal 7.x

Hi,
I installed Drupal 7.0.
I installed Heartbeat 7.x-1.x-dev.
I installed Chaos Tools 7.x-1.0-alpha2
The installation created a Site Activity and User Activity selection on the main page under Navigation.

When I click on them I get an HTTP 500 error. "The website cannot display the page"

It's trying to get to :
http://www.pawsrunningclub.com/Drupal/?q=heartbeat/siteactivity

(I installed Drupal in a folder on another website, pawsrunningclub)

I don't want to override whole template.php file. I just want to override single function of template.php file.
I've asked it here also: http://drupal.stackexchange.com/q/161/153 but unable to get to-the-point answer. Read it from link if you're planning to answer in generalized way. I'm interested to add/alter THEME_html_head_alter() function (but not limited to it).

Hello I'm working on a drupal 7 Project at time running under xampp 1.7.3 (PHP 5.3.1 - MySQL 5.1.41) but when I move It to server2go (PHP 5.2.10 - MySQL 5.0.41). So I think I'm to the right please to be help.
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Additional uncaught exception thrown while handling exception.
Original

PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'joeland_crefsco7.url_alias' doesn't exist: SELECT source FROM {url_alias} WHERE alias = :alias AND language IN (:language, :language_none) ORDER BY language ASC, pid DESC; Array ( [:alias] => node [:language] => fr [:language_none] => und ) in drupal_lookup_path() (line 177 of D:\server2go\htdocs\crefsco\includes\path.inc).
Additional

I'm quite new to Drupal, so I hope you forgive me asking this question that in one way or other may already have been answered.

I runn Drupal 7.0 on my localhost and would like to install a template that is only available as a ZIP-File.
Looking in Design > Install New Themes, I found that only tar.gz-files are accepted.

Is there a possibility to upload / install a ZIPed Theme?
If not, how can I create my own tar.gz - Files with the required .info files?

Thanks in advance,

manni60320

Hi, I just want to add a little java applet in a form. However it does not work.
Here is the code I use so far:

I have a .tar.gz of my website earlier made in Drupal, now I want to host the website on another host, how do I upload the on the new host?