Further to my comment: "Remember, you've got until December 2002 to comply!", the main lab accreditation body in Australia stes that (provided you applied prior to June 30 2000) from January 1 2001 all assessments will be against ISO 17025 (but all ISO 17025 noncompliances will be classified minor), from September 1 2002 non-compliances raised against ISO 17025 must be closed out or they will be re-coded as "Conditions" (Major NCRs) and must be closed out within three months.
Therefore existing accredited labs have until 31 December 2002 (or their next assessment after that date) to close out ISO 17025 nonconformances identified at previous assessments.
If you aren't doing the ISO 9001 thing, or have a comprehensive management system of your own, then the jump from guide 25 to ISO 17025 is a quantum leap.
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