Yes, a MicroSD and T-Flash card are the same thing.
If a Flash card will work with your DS, then you can use Action Replay codes, not the Action Replay itself. Here is a quick guide on getting cheats on an R4 (method easily transferable): http://forums.afterdawn.com/thread_view.cfm/505999
Not natively, but you can get a flash card such as the R4 that will let you. Google R4 DS
Wood R4 is a custom firmware for the infamous 'R4' flash cart for the Nintendo DS. This firmware allows new features that newer flash carts have, such as compatibility with newer games. There is a separate version of the Wood R4 available for the R4i Gold. The latest wood r4 kernel is wood r4 V1.37, which was released on Sep 30th.
Revolution 4
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)
Some flash carts like R4 let you use a MicroSD; apart from that, no.
No, you cannot get a GBA emulator on the r4. Nor can you on any flash card. However google eZFlash, it's pretty much a flash card for the gba slot on the ds.
Your laptop is not a Nintendo DSi and the file formats are not compatible.
its impossible to put flash player on the DSI.You need to buy a r4 card. put the kernel and roms into the SD card, then play dsi with the r4 card and sd card.
you can use a r4 for ds lites but with dsi's there is a different type of r4 sorry i dont know the name of it
To get ds hombrew you need a flash cart such as R4, M3, CycloDS, or (if you also want to use gba roms) Neoflash. To get Homebrews just use a searh engine such as google.com.
The R4 and other flash cards are only found via reputable online vendors. No brick and mortar store carries them due to close licensing relationships with Nintendo.