Connecting 2 pixs on the same network segment

I have a Cisco ASA 5510 at  I have DMZ on one of the VLANS and of course our default route to the internet.  Recently we added a faster connection to the internet just for the IT department.  I am aware that I can not have 2 Default routes on an ASA or Pix.  What I wanted to do as a work around is this.  I have a Pix 515 that I set up as, and gave it a default route to the internet vis our new connection and I set a static route to our DMZ in the routing table.  When I switch my PC to use the default route of 253 I can get to the internet, but can not communicate with any device in the DMZ.  To test where my problem lies I hooked up a ratty Linksys Router in place of the PIX.  I set a static route to the DMZ and it works perfect.  Am I missing something on the PIX?  I have read a few posts that doing this is not legal for a PIX.  I can't see why.  Or at least I can't see why this can not be overridden.
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

>>I have read a few posts that doing this is not legal for a PIX.  I can't see why.

That is can't do this with a PIX because a PIX does not behave like a true router.  It will not allow you to send traffic to it and then have it redirect that traffic back out the same interface that it entered the firewall from, which is essentially what you are wanting it to do with your setup.  Other devices will do this, but the PIX has some immutable rules by which it must abide, and that's one of them....:(
If you have the latest software on your PIX ou can do this. Upgrade your IOS and look at these links. I went through this not too long ago.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Please add a network diagram. Your network design is not clear.
Ernie BeekExpertCommented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.