How do I migrate custom paper sizes to a new computer?

[jharrisonphoto]

Since everyone does printing here, I thought this might be the best part of the forum.  I have a ton of custom paper sizes. I can't find where they are stored on the old computer to migrate them.
I used the apple search with system files, looked through adobe and epson app support directories and also tried the Photoshop preset sync to the new computer and that didn't do it.
Didn't find anything here or on Adobe's forum.  

Any help would be appreciated since I have a ton of custom sizes created!  Thanks in advance.
John

[howardm]

On my machine, they are stashed in ~/Library/Preferences

[HJM-MBA:~/Library/Preferences] howardm% pwd
/Users/howardm/Library/Preferences
[HJM-MBA:~/Library/Preferences] howardm% ls -lt *custompre*
-rw-------  1 howardm  staff  8689 Feb 15 21:52 com.apple.print.custompresets.forprinter.Brother_HL_5450DN_series.plist
-rw-------  1 howardm  staff  2878 Feb 14 14:53 com.apple.print.custompresets.plist
-rw-------  1 howardm  staff  3892 Feb  7 10:12 com.apple.print.custompresets.forprinter.Brother_QL_710W.plist
-rw-------  1 howardm  staff  1725 Feb  7 10:12 com.apple.print.custompresets.forprinter.HP9040_AE_SD.plist
-rw-------  1 howardm  staff  2138 Jan 23 07:49 com.apple.print.custompresets.forprinter.Brother_PT_2730_2.plist
-rw-------  1 howardm  staff  3163 Jan  3 11:17 com.apple.print.custompresets.forprinter.Epson_3880.plist
-rw-------  1 howardm  staff  3191 Dec 27 18:20 com.apple.print.custompresets.forprinter.Dell_1350cnw_Color_Printer__94_7E_EB_.plist
-rwxr-xr-x  1 howardm  staff     0 Feb 18  2012 com.apple.print.custompresets.forprinter.Dell_1350cnw_Color_Printer__94_7E_EB_.plist.lockfile

[Wayne Fox]

I believe this is the file you are looking for if you just want your custom paper sizes (not printer presets)

~/Library/Preferences (com.apple.print.custompapers.plist)

This is in your user folder library, not the system library folder.

[jharrisonphoto]

It worked perfect thanks!!