Good luck with this. I purchased some NXTs in an exchange and tried to install the wallet. Talk about unintuitive. I sold them back. Maybe this will turn out alright for you all, but right now NXT makes Bitcoin seem user-friendly.
Hope u made some profit on them.
If u decide to get back in, just ask for some help on the install. It's not all that difficult, but it is a multi-step process:
Download client (5.8 at the moment), links at the start of the thread.
Remember to verify the SHA256 hash.....
Read this entire thread.....

Install/update Java.
Install update yr anti-virus/malware and run a scan.
Run the NRS Java client from the command line (tricky bit), .bat file useful here.
Connect to the local NRS Java process using yr browser : localhost:7874
Create a really,
really, really secure passphrase. 30 characters or more.
Input that passphrase to creat an account. Passphrase = account. Do not lose it......
Enjoy!