I believe you misspelled:
http://senseis.xmp.net/?Honinbo
http://senseis.xmp.net/?HoninboShusai

Being a pawn doesn't matter for time limits. When you run out of time you lose that game.

or on one of the "-"'s in the tournament table behind your name

don't click on the opponents name but on 'japanese chess' (the one you would like to play) on the main page

In what way would two different colours be an enhancement? I don't understand...

Maybe Kyoto Shogi? It has some funny/remarkable changes from Shogi:
"In kyoto, there is no promotion: at the conclusion of every move the piece that moved must be reversed."
It is also played on 5x5, but with 2x5 pieces. Here is the site: http://www.drjochum.de/ (click on the link)
I haven't played it, I leave it to the expert Shogi players to judge :) but looks fun to me.

I found some larger Shogi Variants but to me they look to slow for a turn-based site.

<Spirou & TKR101010> Thank you both! I will look at the sites soon, and Spirou I'll try to learn the japanese signs. It's probably worth it!

takodori> this is a great help already.

Thanks! I recognise the portal from some earlier google searches... but links to shogi seem to lead to broken pages, pages in japanese or too difficult pages.

If I find anything useful I'll post it, but I have not much hope.

Does anyone know a site where the "Shogi basics" are explained?