[TYPO3] Force Language and L-parameter

[Søren Schaffstein]

Hi there,

is there a way to force the language and value of the L-parameter on a 
page by TypoScript?

Setup is this:
We have a page in german (default lang) and english. To explain some 
further details in more languages there are 10 pages in spanish, 
russian, etc.. When a user jumps to one of these pages, (or enters them 
directly from a url) TYPO3 should switch to english and apply L=1 to all 
links.

Switching the language seems easy as it can be done using:
config.sys_language_uid = 1

But clicking on any link then switches the language back to default.

Any ideas?
Any help is greatly appreciated.

Cheers,
Søren