Hi, sorry for my bad english.
I would like to migrate from Drupal 6.16 to Joomla 2.5.

Questions:

I have to upgrade to Drupal 7 before migrating to joomla?

What are the technical features that the hosting must have? For example: PHP modules; particular configurations of php; php timeout, etc..

The text that is transferred preserves the original formatting? (for example: bold, color, alignment etc.).

From Drupal to Joomla you can redirect the links of old articles to the new items (301 redirect)?