Hi,
Thanks for your input buddee. My goal is to have the WHR-G300N V2 as a wireless repeater. I have a desktop computer in the end of the building which currently has a weak connection with the WBMR-HP-GN. Out of curiosity I did test the connection with a cable and found out that it works instantly. Connecting the WHR this way would not help me at all and that is why I am lending your brains.
So the answer to your question: the WHR-G300N would be a repeater with wireless connection to WBMR-HP-GN and also it would need to offer the internet connection wirelessly onwards to my computer.
Your proposal of flashing the WHR-G300N looks good. I have seen discussions about this but wouldn't this be a 3rd party software which voids the warranty once installed on my Buffalo? At least this is how I understood it and that is why I wanted to hear if there is another way of accomplish what I am after. Well in any case this will not be a problem for me if it solves the problem. So please any links or input is highly appreciated and I am naturally keen on giving more information about my system if that is needed.