Try white vinegar.

The link below is a great resource for removing stains from carpet. You can also call them at the 800 number and they are very pleasant and helpful. Good luck.

Here is a link that might be useful: Carpet Stains

We had green carpet for 5 years and never spilled any wine on it. Now we just got cream carpet and with our 7 month old golden retriever are on our third wine spill! First I blot (don't rub) as much excess as I can get out. Then I run for the 7up can and drench the area with it, let it set for a couple of minute and then blot again (on really heavy stains I've left the 7up on over night). Then I clean it with regular carpet cleaner and cover the spill with a towel so it doesn't get dirtier from the dog while drying. So far ever spill has come out. Not sure if it will work on dried red wine but it works great on fresh spills.

We had a similar experience with grape juice and a beige carpet. Had very good results with OxyClean and my shop-vac. I used the shop-vac to suck up as much as it would then started applying, letting it soak in, then sucking up the OxyClean with the shop-vac. I didnt have to scrub anything, just used patience and repeated about four times.

scsr, did that remove the stain completely? Maybe I wasn't patient enough, mine is still slightly discolored.

Spot Shot.

Here is a link that might be useful: Spot Shot page