Here, there is a much more simple solution.
Just use this trainer:
Hoodlum's trainer
Unzip, drop it in your game (program files/EA Sports/Nba live 2005)
Run it, and this will start the game, then load your dynasty press 0 (i think that is the button for 1000000 dynasty points) then save your dynasty. Quit the game and restart it the normal way (don't use the trainer), load your dynasty and everything should be the same except you have tons of points. I wouldn't play any games with the trainer on, especially if your using the keyboard for controls.
Personally, I find dynasty mode kinda boring, its just too easy. I don't use the trainer and I sim all my games (aside from all-star weekend), yet my teams always win championships within 2 or 3 years of starting. Today I started one with Boston (and updated rosters). I traded away my bad players with big long term contracts (Blount and Lafrentz) for even crappier players with short big contracts. I don't remember the exact moves but I got Penny Haraway (14 mil contract expiring that year) from New York and some other SG for both of them. Then I traded that SG along with Al Jefferson for Dwight Howard. I made it to the finals that year as a 3 seed, simming all games. Then I let Walker and Penny go, leaving 20 million to resign players. I got Payton back for 2 years for around 7 million, and then I signed Gasol for a 7 year deal about 8 million a year. Then that year I won the finals as a 3 seed again. I made some more moves got some strange role players (Mashburn and others off the free agent list) and had the best record in the league but lost the championship in 7. Then offers started flying in to take over their dynasties, Chicago, New York, Seattle among others. Now I'm working with Chicago.
Trick to dynasty mode:
-Other teams don't value potential of players
-Always trade away your huge contracts for contracts ending that year, unless the player is a star (pierce, wade etc)
-Don't scout, rookie stats are too low, just sign them or trade for them after they breach the 70 overall mark.
-Make your team as young as possible
-Stay under the cap, the easiest way to get a budding star is to sign him
-Go after future stars (like Howard) not current ones (Walker)
-Only use dynasty points for team training, usually 50-50 or just one category at 100
-Before the offseason save, if your offered a job it means that around 5 teams also want you. Just sim the offseason, reload your saved dynasty and a new team will ask you each time.
Okay I really rambled there, must have lost focus
