I have a Denon AVR-3808, Pioneer 1080p 50" Plasma, Samsung 1080i 26" LCD, Sony PS3, Foxtel iQ2 and Harmony One Remote.

I have all of the equipment in my lounge area, except the Samsung LCD, which is in the bedroom.

What I want to do is purchase a HDMI Splitter to send the signals from the lounge to my bedroom so I can return the multiroom iQ box we have and view my PS3 media in my bedroom.

This I have found out I will be able to do using this device.
http://www.monoprice.com/products/product.asp?c_id=101&cp_id=10110&cs_id=1011002&p_id=5312&seq=1&format=2

However, I then need to get my IR signals received from my bedroom to the above equipment. Which of the below devices would I need to be able to do this.

http://www.selbyacoustics.com.au/storefrontprofiles/DeluxeSFItemDetail.aspx?sid=1&sfid=74520&c=785255&i=241457935
http://jaycar.com.au/productView.asp?ID=AR1814&keywords=AR%2D1814&form=KEYWORD
http://www.selbyacoustics.com.au/storefrontprofiles/DeluxeSFItemDetail.aspx?sid=1&sfid=74520&c=0&i=243655038
http://jaycar.com.au/productView.asp?ID=AR1810&keywords=extender&form=KEYWORD

Or is there anything else that you would recommend to do this?

I take it you already have the ability to operate the PS3 via IR (IR2BT or such)?

I would probably use THIS (http://www.amazon.com/Next-Generation-Remote-Control-Extender/dp/B000C1Z0HA/ref=sr_1_1?ie=UTF8&s=electronics&qid=1242959698&sr=8-1) with THIS. (http://www.amazon.com/Next-Generation-3-EYE-Triple-Emitter/dp/B000CBZT5I/ref=pd_bxgy_e_img_b)

You'll be able to control up to 3 devices (PS3, AV receiver) remotely. The only problem is that it won't work with the Harmony One, since the One doesn't use standard batteries. I'd just pick up one of the cheaper Harmony's (670, for example) that uses standard batteries and keep it in the bedroom.

I will be purchasing the Logitech Harmony PS3 Adaptor soon so will not need IT2BT, also you are right the Harmony one does not support RF so this will not work for me.

If I use an IR repeater however I should have no problems..Or am I wrong?

The last item you listed, the wireless remote extender, should do the job. You just have to be sure there is a place to put the receiver so that it's IR signal will reach all your components. If it has an IR output, you can use emitters, like the first item listed; although it would need to have more than one emitter(one for each piece to be controlled).

Rob