here i go once more

[Duce]

Simplest way would be to just add a cheap WAP (Wireless Access Point) to your existing router/hub/switch.  I've had good luck with the D-Link DAP 1360 on the consumer end, but the much cheaper TP-Link ones work just as well for the most part.  Or simply buy an all in one Ethernet router with wifi built in and skip the WAP portion of it.  I highly recommend any of the ones that are capable of running DD-WRT firmware, like the Linksys WRT54 series.

Creating an ad-hoc network via a Windows PC is not terribly difficult, however.

I find it to be unnecessarily complex, though.  Such ad-hoc networks are more intended for one-off on the fly access, I've always found it extremely redundant to have to have a PC/laptop on at all times to serve out the wifi when a WAP can be found for under $20.

[Duce]

Having to have a $500 to $2000 laptop powered up and online at all times to serve ad-hoc wifi is a poor solution in the world of $20-$30 N routers and access points.  I prefer wired anyways, esp considering the Amiga doesn't support up to date wireless protocols legacy side.  I'm not running my AP's with WEP or basic WAP, not for any amount of money.

But yes, it's doable without much effort.  A matter of a few clicks, in fact.  But I fear the OP might not have the technical skill for it.

I recommend the OP just gets the EasyNet kit and goes from there.  It works well.

After 3 different failed attempts at what is usually a very easy process for anyone with basic knowledge of the internet, best to keep it simple.  No offense intended.  The EasyNet package is as simple as punching in some numbers.  Long gone are the days of configuring every stinking AmiTCP file via CED.

[Duce]

Yeah, it does work just fine and I use ad-hoc wifi networks quite a lot in group situations (meetings out of the office, etc.) when there is no existing wifi hotspot.  Generally just create an ad-hoc wifi AP using my 4g connection of my laptop to serve out wifi to the other people around me.  Easy to do and Google has a plethora of how to's.

Tethering to a MyFi type box or to a cell phone is also pretty dead simple too, but none of these solutions is something I'd use permanently.

[Duce]

Speeds with WAP/WAP2 shouldn't be too bad on an Amiga.  I'd assume it'd be done by hardware in the NIC for the most part.