The only way someone can "gift" you 30,000 ff miles is in the form of an award ticket, and that also cannot be combined with your current NW ff account. Accounts can't be combined (with some airline and hotel exceptions). So usually a person has to decide which account (CO, HP, NW, AS, etc.) will accommodate her/his flight patterns, and use that account number on all tickets (before the flight). Now I usually put all my CO and AS flights on my NW account to help accumulate towards status. AND YES! today I made Gold Elite on NW! BUT I retain my CO account for HP flights (which do not count for NW except for connection to International flights) and also for the occasional telephone ff miles offer. Do not have an AS or HP account, but do fly them regularly due to my location.
When do you want the award travel? Where are you located? Mileage run? Have you checked into any bonus miles on the CO website? online purchase, double miles, etc. What I'm getting at is maybe you could look into trying to find a way to 10,000 ff miles on CO, and making your 40,000. All depends on the factors of the game.
Good luck. Welcome.
Linda