My Parents inherited a Netgear DG814 ADSL router modem. This is a prehistoric piece of equipment and dates from a time when most UK ADSL connections were 512 Kbits/second. I also believe it was one of the first ADSL modem routers on sale in the UK as it was purchased around 2001. More details can be found at www.thinkbroadband.com/hardware/reviews/12-netgear-dg814.html
Citrix do not provide a 64bit ICA Client for Linux. It is necessary to configure Linux Mint to run the 32 bit client in a 64 bit operating system. This Knowledge Base article helps describe the process.