Amitcp proxy settings ?

[pVC]

My PC has a internet connection, and I want share it with my A1200, how do I do it ?

It's directly connected to internet without any router? Then you must set from PC to let it share the connection. You must have LAN setup on it as well as internet. Then you can configure the Amiga to use PC's LAN IP-address as gateway.

A lot easier option would be to have some sort of router there between the internet and your computers. For example a better ADSL box which would have router built-in, or stand-alone router between ADSL box and your own computers etc. Depending of your setup. Then you'd just connect all computers to that router and use same LAN settings for all and router as gateway or even as nameserver too.

I'd recommend you to get one if you don't already have.. they usually work as firewall too. You can get the cheapest ones under 20e, so it's not that bad investment

I dont understand how to determine the proxy to Voyger browser using AmiTCP/IP 4.0 demo version.

In Voyager: Settings -> General Settings -> Network -> Proxies

[pVC]

Ok, and if your LAN works between Amiga and PC currently, then you'd just need to share the 3G internet to rest of the computers (amiga). I think there should be option for it in Windows, but as I'm not a PC user, I've never tried it I would imagine that when you find that and check your Amiga's configuration, it should work. For Amiga you need to define PC's LAN address as gateway and define correct DNS (nameserver) address.. you can dig that out from PC's config.

[pVC]

amitcp:db/resolv.conf

There should be line with NAMESERVER text and ip address after it.

[pVC]

It would have been enough to add the line without reinstall too.

You're sure you have unique actual ip address for the amiga? I don't know if Windows acts as dns server when sharing the connection... you might try putting your ISP's recommended nameserver (check what your windows has got). And one domain should be enough.. not necessary any..