I couldn't find a tab for this anywhere on the web, so I tried my hand at it.
This is just the solo, the rest is way to complicated for my level.
I spent several hours looping this trying to get it. This may not sound exactly right or 
may have overlooked something, but it may
provide a good starting point for a better tab. Note too, that this tab
doesn't have all the frilly extras that make the real one "come alive."
This is just the series of pitches I believe are being played.

UPDATE 02/20/08 - Updated head text from pre-submittion to post-submittion tense.

-------------------------------------------------------------------------------
                        Come On to the Future - Skillet
-------------------------------------------------------------------------------
Tabbed by: SomeRandomLeech
Email: unkn0wnfr34k-ultimateguitar@yahoo.com

Tuning: Standard

|--------------------------------|
|-15h17--15\8--8/15--17p15\8-/17-|
|--------------------------------|
|--------------------------------|
|--------------------------------|
|--------------------------------|

|-----------------------|
|-15h17--15\8--8/15-/19-|
|-----------------------|
|-----------------------|
|-----------------------|
|-----------------------|

|------------------------------|
|-15h17--15\8--15h17--19p17p15-|
|------------------------------|
|------------------------------|
|------------------------------|
|------------------------------|

|-----------------------------------------|
|-15h17--15\8--8/15--h19-p15-h19-p15-h19b-|
|-----------------------------------------|
|-----------------------------------------|
|-----------------------------------------|
|-----------------------------------------|

| /  slide up
| \  slide down
| h  hammer-on
| p  pull-off
| ~  vibrato
| +  harmonic
| x  Mute note
===============================================================================