CM7 for g1/dream

Those of us with that old g1 that either have nothing better or aren't allowed to mess with that shiny Nexus S will rejoice about this new ROM. It's CM7, and then some under the name COS-DS Gingerbread ROM(blandest name ever people!!) on the unlocr's database, it's gingerbread for g1 heaven
http://theunlockr.com/2011/03/09/cos-ds-gingerbread-rom/

Android ROMs- an idiot's guide

What are they?
Android "ROMs" are images of the android OS that have been changed somehow by the developer. THey can be used to get new features, update past official update releases(looking at you G1, you stuck on Donut feind!!!), and others.
How to find them
-go to Cyanogenmod's download page
-The Unlocr's database
-miraculously finding their main thread in a forum
How to "flash"(install) them
1. Root
2. open this post
3. download ROM from said sources
4. get the ROM manager app from the android market and flash clockworkmod recovery
5. open Rom manager app(now rom manager)
6a1. install zip from SD or go to 6B1
6a2. choose ZIP file
6a3. check backup current ROM and Wipe
6a4. let it do its magic, then activate Gapps or skip if u can then use wifi
6B1. reboot into recovery
6b2. wipe/factory reset
6b3. install ZIP from sd card
6b5. do a nandroid backup
6b6. choose and install ZIP
7. reboot and enable Gapps
GOING BACK
1. recovery boot or open ROM manager app and click manage/restore backups
2. choose backup
3. let it flash
4. try rebooting again
5. if no work, reboot recovery, wipe twice, go to advanced>wipe dalvik cache, wipe again, repeat 1-4

how to activate G1 without data

1. barrow Friends SIM to activate
2. get data for that month
3. flash custom rom
4. http://theunlockr.com/2010/01/10/how-to-activate-the-g1-without-a-data-plan-or-sim-card/

1 is easy, but hackers usually have no Friends. I should know
2. pricey
3. may only work if you can run apps beforehand
4. hard

number 3
1. root your android somehow, if you can run apps before, use the browser to download androot apk, then use astro to open, root
2. get clockworkmod recovery by getting rom manager app, or some other way(go to a)
3b. get cyanogenmod rom, rename it to a zip file named update go to recovery, use update.zip
3a. get cyanogenmod rom thru clockworkmod download, check ALL boxes, or get rom on SD card and open zip via recovery
4. reboot, touch android, skip, skip, settings, wireless, turn on wifi, connect, open market, signin
DONE!!!
EDIT-this overlaps with the previous post, if option 3 if followed, the previous Post is near identical with small addons and more detail.

Imbecile's guide to custom roms, overclocking, tethering and all things root

You want to root an android, but don't know how or why, both are answered here!
1. get androot apk file and install astro file manager from the market. use astro to open the apk. check your options, root, it will say woot! blah blah blah
2. get rom manager app from market.
3. open rom manager, download rom, cyanogenmod, choose rom, CHECK "GOOGLE APPS", "BACKUP", "WIPE", ok
4. it will download(full wifi needed)
5. ok
6. reboot, command prompt opens, DON'T TOUCH ANYTHING!!!!
7. eventually after 2 reboots the activation screen comes up, don't freak out
8. toutch android, skip, skip, your rom starts, turn on wifi and connect, then open market, login to google, get "barnacle wifi tether", setcpu, root explorer(free on mediafire.com), droidemulite, romgripper++(for games), enjoy!
9. going back, either boot into recovery or open rom manager and go to nandroid or backups, choose backup, let reboot, it will be the same as before, with root, but androot can fix this