Windows server Administration - Remote Destktop - open to bidding

Hi, Need help with setting remote desktop for 3-5 users. I am using software that needs sql express called Gemin by VTUK need full access to office for users Server details below: Processor Intel®Xeon® E3-1270 V3 Speed 4 Cores (HT) x 3.5 GHz RAM 16 GB DDR3 ECC Hard-disk space 1,000 GB (2 x 1,000 GB SATA) RAID Software RAID 1 additional SSD 240 GB (2 x 240 GB SSD) Intel® S3500 Traffic Unlimited traffic Operating System Linux, Windows, 1&1 Managed 1&1 Firewall External Cisco-based IP firewall IP address Own static IP adress Management software Parallels® Plesk 12 (resellable, unlimited domains) Access Full root/administrator access Bandwidth 100 Mbit/s