Actually there's another way to do this, introduced recently, that can help if you have a long list of usernames that you want to give the same module.

if ($core_genius->check("userloginname = ann, brenda, charles, diane, ed, fred, geoff") ) return XXX;
if ($core_genius->check("userloginname = henry, ian, jake, kathy, liam, mary, niall") ) return YYY;

first of all thanks for this Module, maybe after 2 months I found a solution.
However, unfortunately I don't have any PHP knowledge..
To put it very simply, what i need is to to have a module shown depending on THE user id.
If I'm not wrong, the syntax to be used is as it follows:

if ($user->id == "63") return 40

where 63 is the user id (got it from user's panel) where 40 is the module id (set in specific 'metamodpos1', added in template's xml)

Unfortunately it is not working (Parse error: syntax error, unexpected $end in Z:\www\joomla\modules\mod_metamod\helper.php(539) : eval()'d code on line 1)
Is the sintax correct?
Can anyone send me some screens to understand the whole setup?
Thanks

Yes, always need the semicolon ";" at the end of lines.

Cheers,
Stephen