You originally said you wanted to hook a apple 27" TB display to a Dell and I said that can't be done.
As for the daisy chaining, MBP-->TB display-->DVI display there are some limitations of chaining displays to MBP as a function of model. That FAQ link I gave earlier has a table showing the limitations.
Also, you never said what the resolution of that DVI monitor was. If it is greater than 1920 x 1200 then you need a dual link DVI adapter rather than a simple single link adapter.
If the DVI monitor is less than 1920 x 1200 then I don't know why it wouldn't work except for possible limitations of TB itself. Maybe only a mini-displayport monitor can be chained to a TB display (if so that applies to any sized DVI monitor -- single or dual linked).
Note, if it is a single link DVI then if you want to add a second monitor you might consider the following:
In other words connect it via USB. I have no idea what the video perfomance is pumping a video signal through a usb2 port.