Lost my external HD(D) that had all of game. Now I can not reinstall or uninstall on built in drive(C) because it cant find (D)

You'll probably have to manually delete the registry entries for the game, it should be somewhere like HKEY_LOCAL_USER/Program Files/Dregnin.net/Sins (sorry, don't remember the exact path off-hand). Impulse uses the registry to detect installations so if you wipe it manually it should let you install the game fresh.

Try CCleaner first. It'll usually take care of bad registry entries. If you still can't install, you have to delete the entries manually.

Manual regeditting can screw up your system though, so caution is advised... in other words, don't edit the registry unless you're absolutely sure about what you're doing.

Mucho Gracias

Am I to delete all of the entries?

OK. I've deleted the reg. it still does not give me the option to install a new

Does Sins show up in the My Games tab on Impulse? If so, does it say Installed or Available?

Hum the registry data for sins on my computer it at: HKEY_LOCAL_MACHINE/SOFTWARE/Stardock/Drengin.Net/sins

You may want to check there to see if there is data there

Also you checked the controll pannels add/remove option to see if it thinks sins is installed?

It shows up indeed

it is "available"

Im attempting to install through impulse now

There you go

Success! Thanks for your time and input folks, of course, especially Annatar