Divine Insect

Here's the first one I found: http://www.consolesource.com/ecomm/catalog/NDS-Backup-Adapter-Plus-p-3018.html They want $29.95 + shipping for it.

The NDS Adapter Plus costs about $30 USD plus shipping, depending on where you buy it. I've been thinking about getting one for myself, actually.

Mineral badge earned, caught Entei while looking for a wild tauros (used Pokesav to get plenty of master balls). Evolved eevee into umbreon. My team is at Lv. 30 now.

Did you download HG as a rom, or did you dump data from your retail cartridge? I've heard people on the Team Cyclops forums (the folks who make the CycloDS Evolution flash cartridge) talk about having problems dumping cartridge data and incompatibility issues with the current official firmware release. If you downloaded HG as a rom, maybe it's corrupted? Could it be an emulator problem? If you're using a flash cart, maybe it has compatibility issues with HG? Whichever method you're using, I suggest seeing if the hardware/software you're using to play HeartGold has a support forum or something. Regardless of whether it's an emulator, rom, flash cart, or device to dump data from a retail cart, there could be compatibility issues.

I do not own an ARDS itself, but my CycloDS Evolution flash cart does support ARDS cheats. For travel, I keep backups of all my DS games on a flash cart since it's easier to keep everything on one cartridge in the DS slot rather than carrying a bunch of tiny game carts with me wherever I go. I've had bad enough luck keeping track of my old GB/GBC and GBA games in the past. Now DS games are even tinier. This way, I can keep my originals tucked away safely at home on my shelf in their respective game cases while limiting the amount of stuff I leave the house with everyday. Anyway, on to my main point: I am currently running CycloDS Evolution with the new firmware v1.58 BETA 2 update, which has experimental compatibility with HeartGold and SoulSilver. So far it has worked and I haven't gotten the random game crashes people have been complaining about on various forums online. I played around with my backup of SoulSilver (US version) while at my college campus today, and I can confirm that pokemon editing for party and box pokemon does work in Pokesav HG/SS 3a by editing the .sav file. I did not need to use the ARDS method. I haven't tried anything else in Pokesav yet. I played around with species/gender/nature/shiny/move sets, various IVs, etc. So far, the pokemon editing has worked just fine for me. I haven't gotten around to playing with money/items/etc, so I can't confirm yet if those work. I just thought you'd like to know about the editor working for me.