Noob stuck with a downgraded ROM

[yamus08]

OK... I know I am going to get a rash of s*&t over this but I could really use some help. I'm sure that the answer that I'm looking for is somewhere around the forum but I'm a single dad with two very young children, 4 and 16 months, and don't have much free time to search through all the threads.
I thought I would be cool and upgrade to one of the custom roms, No2chem. I first tried downloading the rom update from the FTP site but the file was corrupted. I then thought I could use PPC kitchen. I ran olipro unlocker and ended up getting stuck in the boot screen. Then I ran the .exe that fixes that and got "no radio" at the bottom of the screen. My final solution was to flash back to the old 2.17 rom which gave me a working device but I am now stuck with a downgraded ROM. Everytime I try to run the RUU for the new Sprint ROM it flakes out at 11 percent.
Like I said, I know the answer is around here somewhere but I have a baby trying to crawl over my laptop as I type this. Any help at all would be greatly appreciate as I know everyone spends a lot of their own time and effort learning these things on their own but I did put as much effort as time would allow into fixing it myself.

Thanks in advance,
Yamus