Installing Language Pack or Templates

[oh266]

Hello, If I try to install the language pack, I become this error:
[FATAL] Error connecting to MySQL on localhost:3306
Reason: Access denied for user 'admin'@'localhost' (using password: YES)
There were some configuration errors, check logs
Logs saved to /usr/local/sitebuilder/tmp/sb_config-0803081421.log

In the sb_config-0803081421.log I find:
[2008 Mar 8 14:18:16] [FATAL] Error connecting to MySQL on localhost:3306
Reason: Access denied for user 'admin'@'localhost' (using password: YES)
Fatal error encountered at /usr/local/sitebuilder/utils//SB/Logging.pm line 121
SB::Logging::Log('SB::Logging=HASH(0x8170c28)', 5, 'Error connecting to MySQL on localhost:3306\x{a}Reason: Access de...') called at /usr/local/sitebuilder/utils//SB/Utils.pm line 94
SB::Utils::checkParameters() called at configure line 200
main::main() called at configure line 287


What can I do ?

thanks for your help,
Olivier