An R4 is used to store DS games you download off the Internet so you don't have to buy DS games anymore you just download them
Someone can buy a R4 DS from the Deal Extreme website. The Deal Extreme website offers a large variety of R4 DS's that can be purchased for any DS system.
There are a couple of places you can buy R4 for the Nintendo DS system. You can buy this at Best Buy or GameStop.
What!? A DS R4??? Well i presume you meen 'how do you make the DS have an auto boot R4?' (not possible!) Just buy an R4, theres no way you can have a DS what runs roms without an R4 (or any other flash cards) You can buy them here: http://www.r4i.co.uk/ (for both DS and DSi)
IF you mean R4 DS, then you have to buy it.. you cant just download it.
Nintendo ds and an r4
You either hack it.. you can use a R4 and download ROMS. or you connect your dsi to the internet and buy them in the dsi shop... for a normal ds well you can buy an R4 online... hope this helps!!
Well, I don't think you can buy it in stores, but you can try online:http://www.buynowmobi.com/New-Standard-Edition-R4-SDHC-Revolution-for-DS-NDSL-NDS
They are illegal in the UK.
No you can only get the R4 chips for portable consoles like the PSP and DS. But there is something called Wiikey.
No, the R4 for the DS will not work on the DSi
Online. No retail store sell the R4 carts as some places have made them illegal due to people pirating DS games.