You used to be able to but you can't now. You can buy R4 cards from multiple stores, www.ebay.com, www.dscardworld.com and www.Amazon.com are all likely to have them.
They are perfectly legal to own as long as you only back up copies of games you have already bought - downloading games you don't have a genuine copy of to begin with is illegal. So it's perfectly fine to own one of these, as long as you're backing up cartridges so you don't have to take 20 cartridges on holiday with you for example! It's also useful to convert your DS / DSi into an MP3 player.
Yes you can buy wall clocks at Walmart in the stores and on line.
There is no place to enter it into the game. You have to go buy an Action Replay. Which can be found in the DS accessories section of Walmart or GameStop.
No they will not take it back without the box or receipt
You can buy some forms of silica gel at Walmart. The selection, however, will vary from location to location. It can also be purchased through the Walmart website.
no
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.
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)
There are a couple of places you can buy R4 for the Nintendo DS system. You can buy this at Best Buy or GameStop.
IF you mean R4 DS, then you have to buy it.. you cant just download it.
Nintendo ds and an r4
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
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.
If you are in Hong Kong, you can buy it in Mong Kok at some electronic store. EDIT: If you live in Europe, google R4 Mania
No, the R4 for the DS will not work on the DSi