Pear problem

am trying to install horde groupware, but the section about horde seems outdated.


refers to this:

but when i do this:
$ pear -c ~/.pearrc install Archive_Tar PEAR Console_Getopt XML_RPC

or this:
pear install -o HTML_COMMON

i get this:
WARNING: channel “” has updated its protocols, use “channel-update” to update.

and when I try do update by doing this

I get this:
Retrieving channel.xml from remote server
Registry directory is not writeable by the current user

And thus my attempt to install Horde crashes to a halt.

help please?

got past that problem, ran into others, though.