You need to download the Reaper pdf helpfile. It is awesome. In fact I bought the book spiral bound from Lulu. The keyword to search for is routing. There is a matrix option that is quick to adjust and then you also need to assign your inputs within the session itself. The keyboard will not automatically be assigned a track. Now, if you have the inputs assigned correctly you will still need to assign an output to the master fader. Assigning the fader to something not present or active is as good as no assignment. I don't know the deep details of Asio4All so I won't be much help there.

Great Eyeballs - Purchase - YouTube Is that the one your referring to?
I searched for routing and couldnt fine it, could you perhaps give me the page number?

Section 2.2 page 48 of the guide to which you linked. Also section 2.3 for the matrix. Additionally section 1.12 speaks to setting up the ASIO or in your case fake ASIO driver or whatever you are using-WDM device etc.

I must proffes myself still quite confused I have for now untill my audio interface comes, pluged my speakers into my computer useing the in built sound card.
Which boxes do I need to tick to "send" the audio to them?
Way out of my depth with reaper :L

You aren't out of depth. I promise. It is just unfamiliar to you. Windows or Mac kindly automates basic functions however all DAW programs require actual routing configuration of one type or another. If you can use a physical mixer and gozinta and gozouta then this is the same only with GUI screens instead. Think in terms of wire. Go to the other chapter to which I linked. It talks about setting up an ASIO driver. In your case you may have to do addtional setup within the Asio4All (A4A) GUI (graphical user interface) because it really isn't a proper driver. Within that gui you can assign in and out as well.

VICTORY!!!
I changed my audio prefrences from ASIO to direct sound!! and its worked.
Not sure what it means but I need to just buy the book and read it!

Good. It will work with A4A as well but I don't know what to tell you regarding A4A settings as I don't use that. At any rate, eventually you will probably grow into a proper audio interface and then you will have a prope asio driver.

Orderd a Focusrite Scarlett 2i2 and an sm57 to get myself started in the recording world. That comes with the driver so I wont have to use the A4A will I?

Correct. The Scarlett will come with an proper ASIO driver. At that time you will have to learn some configuring but not nearly the headache A4A would have been.

Awsome! Thank you for your insight and help to reaper!

My focusrite came a few days ago and in the excitement of a new bit of kit, completly forgot about my keyboard. Now the excitement has worn off, I want to start working on something instead of just mucking aroundHow do I set them both up to work because it looks like its just one or the other