I used the following guide:
https://mega.nz/#!JXwVxRgT!uZUfnNHnfL_yONRZkWxUIXimjmQ6_Dmpmfd_9HqsgfsThe same link can be found on page 1 under specifications (I am not the author of the guide).
Step 1:
Make sure your wallet is fully synced.
Step 2:
Go to File > Receiving Addresses > Click on New to generate new address
Name it whatever you want, for example MN1
Step 3:
Send exactly 1000 xlr(xevan) to the address generated. If you have multiple addresses in one wallet you will basically just send 1000 xlr to yourself minus small fee's.
Total debit must be -1000
Total credit must be 1000
Wait for about 15 plus confirmations.
Step 4:
Generate masternode private key:
Go to the debug console and type in: masternode genkey
Also in the debug console type in: masternode outputs
Step 5:
Edit the configuration file masternode.conf (default directory is: C:\Users\username\AppData\Roaming\solaris)
Masternode.conf example:
MN1 Your_IP_address:60020
Step 6:
Edit the configuration file solaris.conf.
rpcallowip=127.0.0.1
rpcuser=ANY_LONG_USERNAME
rpcpassword=ANY_LONG_PASSWORD
staking=1
server=1
listen=1
port=port
masternode=1
masternodeaddr=YOUR_EXT_IP:PORT (I use ip_address:80)
externalip=YOUR_EXT_IP:PORT (I use ip_address:80)
masternodeprivkey=
addnode=78.145.45.173
addnode=92.108.70.246
addnode=89.169.62.37
addnode=89.65.73.101
Last step:
Re-start wallet > goto Masternodes tab > start your alias/masternode.
A good way to check if your masternode is running is to check your masternode last seen timestamp with the other masternodes.
For me it took 7 hours before first masternode payment showed up. So be patient 
Let me know if you have any problems.
