ecoloco wrote: I can't modify php.ini to allow upload files that weight more that 2MB. How can I install the component?

From this article:
www.joomlapolis.com/support/tutorials/95-installation/18196-checking-your-php-settings

see this quote:

On a remote hosting environment, if you do not have access to this file you will need to contact your host helpdesk and have them make any changes needed for you to increase the ‘upload_max_filesize’ php parameter. Actually, even if you do have access and can modify it, better be safe and open a ticket with your helpdesk as additional steps might be needed from their end (e.g., perhaps server restart is needed depending on hosting package).

If your host helpdesk refuses, you should seriously consider looking for a new host. This is a simple setting and there is really no real argument for not having this set to at least 8M.