Is it possible to compare microarray expression values that have been normalized by different methods?

For example, I would like to compare published data sets, one has been normalized "by log2-transformation, subtraction of median, and division by standard deviation" and the other used lowess normalization.

Also, I would like to compare my own data with these data sets - I have performed a one colour array - which normalization method would be the most appropriate? I have no experience with bioinformatics tools or coding and need the most simple method possible.

@Liz That's right, It's

essentialto haveraw datagenerated by scanner. So you can use raw foreground and background intensities to normalize data in similar way (according to commonly used method for a given platform). Then You can use one of the rank methods (RankProdpackage in R) orMetaArray(computes Probability of expression = POE which gives transforms data to the same scale) and for example t-test frommulttestpackage (all software from bioconductor).