Audio/Video Geeks, to me! Help needed

[grumbler]

Plus, I want to try the 1080i upscaling capabilities of the receiver (the Wii's maximum resolution is 576i, IIRC),

Ah, so there is a compelling reason to do so.  Gotcha. 

[Grey Fox]

No SCART port on the receiver.

GF, I'm too lazy, and you've already researched for me 

L.

So, when do I found out if I was successful?

[Pedrito]

So, when do I found out if I was successful?

Not before saturday 

L.

[Valdemar]

No SCART port on the receiver.

GF, I'm too lazy, and you've already researched for me 

L.

Looking at the pic of the back I'd say AV 5 or 6, but then my Wii only has three jacks that corresponds nicely with just that

V

[Duque de Bragança]

I want to control all my equipment through the receiver, and a single cable to go up to the TV.
Plus, I want to try the 1080i upscaling capabilities of the receiver (the Wii's maximum resolution is 576i, IIRC), and to see if the Wii audio section gains benefit from the 5.1 speakers more than from the crappy TV speakers.

Wii's maximum resolution is 480P which makes a big difference since it's 60 hz and progressive.
The Wii won't gain much from the 5.1 speakers since it only outputs Dolby Pro Logic II (stereo) unlike the PS3 (PCM or DTS HD ) for instance or even the Bobox.

Grey Fox's advice should work.
Get a HD console to link it to the receiver, please 

[Pedrito]

i have a ps3 for blu-ray playback

L.