That would be the stock, rooted ROM.
The custom one is my favorite for starting new ROMers on, CyanogenMod 6.1. It's as complicated as you want it to be, even if it is developed by Team Douche.
It has a very stock-like feel that isn't intimidating at all, and if you like I'll talk you through putting the stock black theme on it to perk up your overall appearance. And enjoy the stock wallpapers.
Now this is VERY important. You will need to flash BOTH of these files. Flash this one first.
http://mirror.teamdouche.net/get/sholes/update-cm-6.1.0-Droid-signed.zip
Now flash this one.
http://cyanogenmod-mirror.local.host.name/gapps/gapps-hdpi-20101114-signed.zip
The second one is known as an app pack. It has all the Google apps that CyanogenMod is NOT legally allowed to distribute as a direct part of their ROM. It's best on a first-time install to boot once between the ROM and app pack.
Okay, at this point I want to say that the backup you made in SPRecovery before attempting to flash any ROM will be your friend if you need it.
Now, watch this video.
Video: Installing a Custom ROM Using SPRecovery - Droid Life: A Droid Community Blog
Now follow these instructions to install the ROM
1. Do a nandroid backup from SPRecovery.
2. Rename the file you're going to install update.zip.
3. Place the file on the root of your sdcard.
4. Reboot into recovery mode (hold the power and “x” button at the same time).
5. Choose “Wipe data/factory reset”. You may want to do this more than once.
6. Choose “Wipe cache partition”. You may want to do this more than once.
7. Choose “Install”.
8. Choose “Allow update.zip installation”.
9. Choose “Install /sdcard/update.zip (deprecated)”.
10. Reboot and you will have to add your Google accounts again.
Now you'll want to do the same thing with the app pack, only you will NOT want to do any wipes.
The method for installing the stock, rooted ROM is to do the exact same thing only without the app pack unless the thread you found it in says to.
Let me know if you run into any problems! And yes, all this CAN be done from on the phone if you need to it.