There are Issues if you are using VBA code, Excel, Word and Access will be regisetered as Office 2000 for VBA Code, you may even find Excel and Word with Macros error when opening (Only when complex VBA Code has been Written)
Access 2000 will be your Default Database program, You can change this in the registry if you Want 97 to be the default (change the MDB extension Application9 to Application8)
If you Try to Open Access97 files it will want to convert them and if you try opening access2000 files you will get a message Invalid Database format. So ALWAYS open your Access Files wih Access open First (Its Best to Name your Files with a 2k OR 97 SO YOU KNOW WHICH IS WHICH!!)
Best of Luck