You do not need to be authenticated with Q or be a registered DotaInvite user - everyone is allowed to join the channel to ask for help.
QuakeNet offers a fast and reliable IRC webclient. You can use this direct link to connect to QuakeNet and join #DotaInvite.Help.
In short:
- Connect to QuakeNet and join #DotaInvite.Help by using the link above or your regular IRC client such as mIRC
- State your entire question. There's nothing more annoying for those trying to provide help than having to ask several clarifying questions.
- Wait for an answer. Do not poke/slap/query helpers.
- Leave the channel.