1)Download ArtMoney and install.
2)Open a game in EHM 07 and open ArtMoney
3)Select EHM from the ArtMoney drop down list

4)Search for the salary cap as an exact value integer

5)Select the address in the left column and click the green arrow. (If there is more then one address look at the notes)

6)Under the value column in the right side change it to you cap of choice (without punctuation).

7)Save

Loading a Table
To load a table, simply start up ArtMoney and select load
Notes
1.You must have ArtMoney running for the cap to stay changed.
2.When searching for small Caps you will run into lots of results, many of them representing players' salaries. I don't know how you can figure out which one is which other then trial and error.
3.Should this screw up you game I am not responsible. Though I doubt it will.
4.Feel free to ask any questions.